20212111010121 has 8 divisors (see below), whose sum is σ = 26956372050624. Its totient is φ = 13471295321520.

The previous prime is 20212111010107. The next prime is 20212111010159. The reversal of 20212111010121 is 12101011121202.

It is a happy number.

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

It is not a de Polignac number, because 20212111010121 - 2⁵ = 20212111010089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20212111010121.

It is not an unprimeable number, because it can be changed into a prime (20212111080121) 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, 861324286 + ... + 861347751.

It is an arithmetic number, because the mean of its divisors is an integer number (3369546506328).

Almost surely, 2^{20212111010121} is an apocalyptic number.

It is an amenable number.

20212111010121 is a deficient number, since it is larger than the sum of its proper divisors (6744261040503).

20212111010121 is a wasteful number, since it uses less digits than its factorization.

20212111010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1722675951.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20212111010121 its reverse (12101011121202), we get a palindrome (32313122131323).

The spelling of 20212111010121 in words is "twenty trillion, two hundred twelve billion, one hundred eleven million, ten thousand, one hundred twenty-one".