111022202121021 has 6 divisors (see below), whose sum is σ = 160365403063710. Its totient is φ = 74014801414008.

The previous prime is 111022202120993. The next prime is 111022202121031. The reversal of 111022202121021 is 120121202220111.

It can be written as a sum of positive squares in only one way, i.e., 94524478416900 + 16497723704121 = 9722370^2 + 4061739^2 .

It is not a de Polignac number, because 111022202121021 - 2⁵ = 111022202120989 is a prime.

It is a super-2 number, since 2×111022202121021² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111022202120985 and 111022202121003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111022202121031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6167900117826 + ... + 6167900117843.

It is an arithmetic number, because the mean of its divisors is an integer number (26727567177285).

Almost surely, 2^{111022202121021} is an apocalyptic number.

It is an amenable number.

111022202121021 is a deficient number, since it is larger than the sum of its proper divisors (49343200942689).

111022202121021 is a wasteful number, since it uses less digits than its factorization.

111022202121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12335800235675 (or 12335800235672 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 111022202121021 its reverse (120121202220111), we get a palindrome (231143404341132).

The spelling of 111022202121021 in words is "one hundred eleven trillion, twenty-two billion, two hundred two million, one hundred twenty-one thousand, twenty-one".