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20210021201 = 1312113112351
BaseRepresentation
bin10010110100100111…
…000111001101010001
31221011110201110011202
4102310213013031101
5312342231134301
613141230520545
71313552226416
oct226447071521
957143643152
1020210021201
118631037067
123b00366155
131ba1060336
14d9a15610d
157d440466b
hex4b49c7351

20210021201 has 16 divisors (see below), whose sum is σ = 20535330816. Its totient is φ = 19888050000.

The previous prime is 20210021171. The next prime is 20210021219. The reversal of 20210021201 is 10212001202.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20210021201 - 222 = 20205826897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20210011201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8595176 + ... + 8597526.

It is an arithmetic number, because the mean of its divisors is an integer number (1283458176).

Almost surely, 220210021201 is an apocalyptic number.

It is an amenable number.

20210021201 is a deficient number, since it is larger than the sum of its proper divisors (325309615).

20210021201 is a wasteful number, since it uses less digits than its factorization.

20210021201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3004.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20210021201 its reverse (10212001202), we get a palindrome (30422022403).

The spelling of 20210021201 in words is "twenty billion, two hundred ten million, twenty-one thousand, two hundred one".

Divisors: 1 131 211 311 2351 27641 40741 65621 307981 496061 731161 8596351 64983991 95782091 154274971 20210021201