21112011121010 has 32 divisors (see below), whose sum is σ = 38542734444672. Its totient is φ = 8324593096960.

The previous prime is 21112011120983. The next prime is 21112011121037. The reversal of 21112011121010 is 1012111021112.

It is an interprime number because it is at equal distance from previous prime (21112011120983) and next prime (21112011121037).

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, 2394362 + ... + 6925098.

It is an arithmetic number, because the mean of its divisors is an integer number (1204460451396).

Almost surely, 2^{21112011121010} is an apocalyptic number.

21112011121010 is a deficient number, since it is larger than the sum of its proper divisors (17430723323662).

21112011121010 is a wasteful number, since it uses less digits than its factorization.

21112011121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4537378.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 21112011121010 its reverse (1012111021112), we get a palindrome (22124122142122).

The spelling of 21112011121010 in words is "twenty-one trillion, one hundred twelve billion, eleven million, one hundred twenty-one thousand, ten".