111121200201021 has 64 divisors (see below), whose sum is σ = 152055683481600. Its totient is φ = 72166489327296.

The previous prime is 111121200200939. The next prime is 111121200201079. The reversal of 111121200201021 is 120102002121111.

It is a happy number.

It is not a de Polignac number, because 111121200201021 - 2¹⁷ = 111121200069949 is a prime.

It is a super-2 number, since 2×111121200201021² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111121200251021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4000173310 + ... + 4000201088.

It is an arithmetic number, because the mean of its divisors is an integer number (2375870054400).

Almost surely, 2^{111121200201021} is an apocalyptic number.

It is an amenable number.

111121200201021 is a deficient number, since it is larger than the sum of its proper divisors (40934483280579).

111121200201021 is a wasteful number, since it uses less digits than its factorization.

111121200201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28718.

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

Adding to 111121200201021 its reverse (120102002121111), we get a palindrome (231223202322132).

The spelling of 111121200201021 in words is "one hundred eleven trillion, one hundred twenty-one billion, two hundred million, two hundred one thousand, twenty-one".