22001211010121 has 12 divisors (see below), whose sum is σ = 25601547046032. Its totient is φ = 18852063908328.

The previous prime is 22001211010061. The next prime is 22001211010139. The reversal of 22001211010121 is 12101011210022.

It is not a de Polignac number, because 22001211010121 - 2²⁶ = 22001143901257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22001211010096 and 22001211010105.

It is not an unprimeable number, because it can be changed into a prime (22001211010171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72668315 + ... + 72970448.

It is an arithmetic number, because the mean of its divisors is an integer number (2133462253836).

Almost surely, 2^{22001211010121} is an apocalyptic number.

It is an amenable number.

22001211010121 is a deficient number, since it is larger than the sum of its proper divisors (3600336035911).

22001211010121 is a wasteful number, since it uses less digits than its factorization.

22001211010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145641860 (or 145641853 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 22001211010121 its reverse (12101011210022), we get a palindrome (34102222220143).

The spelling of 22001211010121 in words is "twenty-two trillion, one billion, two hundred eleven million, ten thousand, one hundred twenty-one".