21112101212000 has 96 divisors (see below), whose sum is σ = 54127756073664. Its totient is φ = 8077673472000.

The previous prime is 21112101211991. The next prime is 21112101212051. The reversal of 21112101212000 is 21210121112.

It is a congruent number.

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, 114647681 + ... + 114831680.

It is an arithmetic number, because the mean of its divisors is an integer number (563830792434).

Almost surely, 2^{21112101212000} is an apocalyptic number.

21112101212000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21112101212000 is an abundant number, since it is smaller than the sum of its proper divisors (33015654861664).

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

21112101212000 is a wasteful number, since it uses less digits than its factorization.

21112101212000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229479409 (or 229479391 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21112101212000 its reverse (21210121112), we get a palindrome (21133311333112).

The spelling of 21112101212000 in words is "twenty-one trillion, one hundred twelve billion, one hundred one million, two hundred twelve thousand".