121002131310 has 64 divisors (see below), whose sum is σ = 307797475392. Its totient is φ = 30338574336.

The previous prime is 121002131291. The next prime is 121002131353. The reversal of 121002131310 is 13131200121.

It is a happy number.

It is a super-2 number, since 2×121002131310² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 121002131310.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 389484 + ... + 627456.

It is an arithmetic number, because the mean of its divisors is an integer number (4809335553).

Almost surely, 2^121002131310 is an apocalyptic number.

121002131310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121002131310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153898737696).

121002131310 is an abundant number, since it is smaller than the sum of its proper divisors (186795344082).

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

121002131310 is a wasteful number, since it uses less digits than its factorization.

121002131310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238997.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 121002131310 its reverse (13131200121), we get a palindrome (134133331431).

The spelling of 121002131310 in words is "one hundred twenty-one billion, two million, one hundred thirty-one thousand, three hundred ten".