151210111201220 has 96 divisors (see below), whose sum is σ = 331783397277696. Its totient is φ = 57822813619200.

The previous prime is 151210111201157. The next prime is 151210111201231. The reversal of 151210111201220 is 22102111012151.

It is a super-2 number, since 2×151210111201220² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 151210111201192 and 151210111201201.

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, 14225450 + ... + 22467390.

It is an arithmetic number, because the mean of its divisors is an integer number (3456077054976).

Almost surely, 2^{151210111201220} is an apocalyptic number.

151210111201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 151210111201220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165891698638848).

151210111201220 is an abundant number, since it is smaller than the sum of its proper divisors (180573286076476).

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

151210111201220 is a wasteful number, since it uses less digits than its factorization.

151210111201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8242341 (or 8242339 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 20.

Adding to 151210111201220 its reverse (22102111012151), we get a palindrome (173312222213371).

The spelling of 151210111201220 in words is "one hundred fifty-one trillion, two hundred ten billion, one hundred eleven million, two hundred one thousand, two hundred twenty".