121021222200102 has 48 divisors (see below), whose sum is σ = 307770830214432. Its totient is φ = 33642965243520.

The previous prime is 121021222200091. The next prime is 121021222200107. The reversal of 121021222200102 is 201002222120121.

It is a happy number.

121021222200102 is a `hidden beast` number, since 1 + 210 + 21 + 222 + 200 + 10 + 2 = 666.

It is a super-2 number, since 2×121021222200102² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121021222200107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12979534399 + ... + 12979543722.

It is an arithmetic number, because the mean of its divisors is an integer number (6411892296134).

Almost surely, 2^{121021222200102} is an apocalyptic number.

121021222200102 is an abundant number, since it is smaller than the sum of its proper divisors (186749608014330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121021222200102 is a wasteful number, since it uses less digits than its factorization.

121021222200102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25959078173 (or 25959078170 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121021222200102 its reverse (201002222120121), we get a palindrome (322023444320223).

The spelling of 121021222200102 in words is "one hundred twenty-one trillion, twenty-one billion, two hundred twenty-two million, two hundred thousand, one hundred two".