120121231330 has 64 divisors (see below), whose sum is σ = 240670725120. Its totient is φ = 42976742400.

The previous prime is 120121231297. The next prime is 120121231357. The reversal of 120121231330 is 33132121021.

It is a super-2 number, since 2×120121231330² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 120121231298 and 120121231307.

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, 7219 + ... + 490198.

It is an arithmetic number, because the mean of its divisors is an integer number (3760480080).

Almost surely, 2^120121231330 is an apocalyptic number.

120121231330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

120121231330 is an abundant number, since it is smaller than the sum of its proper divisors (120549493790).

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

120121231330 is a wasteful number, since it uses less digits than its factorization.

120121231330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497515.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 120121231330 its reverse (33132121021), we get a palindrome (153253352351).

The spelling of 120121231330 in words is "one hundred twenty billion, one hundred twenty-one million, two hundred thirty-one thousand, three hundred thirty".