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2011221010221 = 34150459324053
BaseRepresentation
bin11101010001000110000…
…111010010011100101101
321010021022110011020020020
4131101012013102130231
5230422440034311341
64135535302112353
7265206634342413
oct35210607223455
97107273136206
102011221010221
11705a54911955
12285955a1b6b9
131178711c11a7
146d4b4c512b3
15374b3176566
hex1d4461d272d

2011221010221 has 16 divisors (see below), whose sum is σ = 2747096493120. Its totient is φ = 1308081265280.

The previous prime is 2011221010207. The next prime is 2011221010291. The reversal of 2011221010221 is 1220101221102.

It is a cyclic number.

It is not a de Polignac number, because 2011221010221 - 213 = 2011221002029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2011221010221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011221010291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6044431 + ... + 6368483.

It is an arithmetic number, because the mean of its divisors is an integer number (171693530820).

Almost surely, 22011221010221 is an apocalyptic number.

It is an amenable number.

2011221010221 is a deficient number, since it is larger than the sum of its proper divisors (735875482899).

2011221010221 is a wasteful number, since it uses less digits than its factorization.

2011221010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374556.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2011221010221 its reverse (1220101221102), we get a palindrome (3231322231323).

The spelling of 2011221010221 in words is "two trillion, eleven billion, two hundred twenty-one million, ten thousand, two hundred twenty-one".

Divisors: 1 3 41 123 50459 151377 324053 972159 2068819 6206457 13286173 39858519 16351390327 49054170981 670407003407 2011221010221