202120122112111 has 8 divisors (see below), whose sum is σ = 231012826902944. Its totient is φ = 173232017729280.

The previous prime is 202120122112063. The next prime is 202120122112121. The reversal of 202120122112111 is 111211221021202.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 202120122112111 - 2⁹ = 202120122111599 is a prime.

It is a super-2 number, since 2×202120122112111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202120122112121) 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, 1150007850 + ... + 1150183591.

It is an arithmetic number, because the mean of its divisors is an integer number (28876603362868).

Almost surely, 2^{202120122112111} is an apocalyptic number.

202120122112111 is a deficient number, since it is larger than the sum of its proper divisors (28892704790833).

202120122112111 is a wasteful number, since it uses less digits than its factorization.

202120122112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2300204001.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 202120122112111 its reverse (111211221021202), we get a palindrome (313331343133313).

The spelling of 202120122112111 in words is "two hundred two trillion, one hundred twenty billion, one hundred twenty-two million, one hundred twelve thousand, one hundred eleven".