21122101201201 has 32 divisors (see below), whose sum is σ = 28360573452288. Its totient is φ = 15192275941440.

The previous prime is 21122101201181. The next prime is 21122101201217. The reversal of 21122101201201 is 10210210122112.

It is not a de Polignac number, because 21122101201201 - 2²⁷ = 21121966983473 is a prime.

It is a super-2 number, since 2×21122101201201² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21122101201601) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36089040 + ... + 36669646.

It is an arithmetic number, because the mean of its divisors is an integer number (886267920384).

Almost surely, 2^{21122101201201} is an apocalyptic number.

It is an amenable number.

21122101201201 is a deficient number, since it is larger than the sum of its proper divisors (7238472251087).

21122101201201 is a wasteful number, since it uses less digits than its factorization.

21122101201201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616981.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21122101201201 its reverse (10210210122112), we get a palindrome (31332311323313).

The spelling of 21122101201201 in words is "twenty-one trillion, one hundred twenty-two billion, one hundred one million, two hundred one thousand, two hundred one".