121311201102 has 288 divisors, whose sum is σ = 340668115200. Its totient is φ = 28523529216.

The previous prime is 121311201073. The next prime is 121311201131. The reversal of 121311201102 is 201102113121.

It is an interprime number because it is at equal distance from previous prime (121311201073) and next prime (121311201131).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 16044799 + ... + 16052357.

It is an arithmetic number, because the mean of its divisors is an integer number (1182875400).

Almost surely, 2^121311201102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121311201102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170334057600).

121311201102 is an abundant number, since it is smaller than the sum of its proper divisors (219356914098).

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

121311201102 is a wasteful number, since it uses less digits than its factorization.

121311201102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7640 (or 7620 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 121311201102 its reverse (201102113121), we get a palindrome (322413314223).

The spelling of 121311201102 in words is "one hundred twenty-one billion, three hundred eleven million, two hundred one thousand, one hundred two".