111212021012210 has 32 divisors (see below), whose sum is σ = 203179142776320. Its totient is φ = 43818759718272.

The previous prime is 111212021012171. The next prime is 111212021012249. The reversal of 111212021012210 is 12210120212111.

It is an interprime number because it is at equal distance from previous prime (111212021012171) and next prime (111212021012249).

It is a super-2 number, since 2×111212021012210² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10082702 + ... + 18002358.

It is an arithmetic number, because the mean of its divisors is an integer number (6349348211760).

Almost surely, 2^{111212021012210} is an apocalyptic number.

111212021012210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111212021012210 is a deficient number, since it is larger than the sum of its proper divisors (91967121764110).

111212021012210 is a wasteful number, since it uses less digits than its factorization.

111212021012210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7940690.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111212021012210 its reverse (12210120212111), we get a palindrome (123422141224321).

The spelling of 111212021012210 in words is "one hundred eleven trillion, two hundred twelve billion, twenty-one million, twelve thousand, two hundred ten".