121202202021102 has 56 divisors (see below), whose sum is σ = 272586331274400. Its totient is φ = 40399834285440.

The previous prime is 121202202021077. The next prime is 121202202021127. The reversal of 121202202021102 is 201120202202121.

It is a happy number.

121202202021102 is a `hidden beast` number, since 1 + 212 + 0 + 220 + 20 + 211 + 0 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (121202202021077) and next prime (121202202021127).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 66236827 + ... + 68042057.

Almost surely, 2^{121202202021102} is an apocalyptic number.

121202202021102 is an abundant number, since it is smaller than the sum of its proper divisors (151384129253298).

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

121202202021102 is an equidigital number, since it uses as much as digits as its factorization.

121202202021102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851300 (or 1851285 counting only the distinct ones).

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

Adding to 121202202021102 its reverse (201120202202121), we get a palindrome (322322404223223).

The spelling of 121202202021102 in words is "one hundred twenty-one trillion, two hundred two billion, two hundred two million, twenty-one thousand, one hundred two".