2011022101221 has 8 divisors (see below), whose sum is σ = 3064414630464. Its totient is φ = 1149155486400.

The previous prime is 2011022101199. The next prime is 2011022101273. The reversal of 2011022101221 is 1221012201102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2011022101221 - 2¹⁵ = 2011022068453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2011022101221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011022100221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47881478580 + ... + 47881478621.

It is an arithmetic number, because the mean of its divisors is an integer number (383051828808).

Almost surely, 2^{2011022101221} is an apocalyptic number.

2011022101221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2011022101221 is a deficient number, since it is larger than the sum of its proper divisors (1053392529243).

2011022101221 is an equidigital number, since it uses as much as digits as its factorization.

2011022101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95762957211.

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

Adding to 2011022101221 its reverse (1221012201102), we get a palindrome (3232034302323).

The spelling of 2011022101221 in words is "two trillion, eleven billion, twenty-two million, one hundred one thousand, two hundred twenty-one".