121211101221102 has 32 divisors (see below), whose sum is σ = 269758237568160. Its totient is φ = 40343665178880.

The previous prime is 121211101221101. The next prime is 121211101221127. The reversal of 121211101221102 is 201122101112121.

It is a happy number.

121211101221102 is a `hidden beast` number, since 121 + 211 + 10 + 1 + 221 + 102 = 666.

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 (121211101221101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1667608549 + ... + 1667681232.

It is an arithmetic number, because the mean of its divisors is an integer number (8429944924005).

Almost surely, 2^{121211101221102} is an apocalyptic number.

121211101221102 is an abundant number, since it is smaller than the sum of its proper divisors (148547136347058).

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

121211101221102 is a wasteful number, since it uses less digits than its factorization.

121211101221102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3335290465 (or 3335290459 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 121211101221102 its reverse (201122101112121), we get a palindrome (322333202333223).

The spelling of 121211101221102 in words is "one hundred twenty-one trillion, two hundred eleven billion, one hundred one million, two hundred twenty-one thousand, one hundred two".