21012111022000 has 160 divisors (see below), whose sum is σ = 58314685014144. Its totient is φ = 7173232128000.

The previous prime is 21012111021953. The next prime is 21012111022027. The reversal of 21012111022000 is 22011121012.

It is a super-3 number, since 3×21012111022000³ (a number of 41 digits) contains 333 as substring.

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, 41260 + ... + 6482740.

Almost surely, 2^{21012111022000} is an apocalyptic number.

21012111022000 is a gapful number since it is divisible by the number (20) 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 21012111022000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29157342507072).

21012111022000 is an abundant number, since it is smaller than the sum of its proper divisors (37302573992144).

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

21012111022000 is a wasteful number, since it uses less digits than its factorization.

21012111022000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6441744 (or 6441728 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21012111022000 its reverse (22011121012), we get a palindrome (21034122143012).

The spelling of 21012111022000 in words is "twenty-one trillion, twelve billion, one hundred eleven million, twenty-two thousand".