21020011002060 has 96 divisors (see below), whose sum is σ = 67309271930880. Its totient is φ = 4801342748928.

The previous prime is 21020011002059. The next prime is 21020011002071. The reversal of 21020011002060 is 6020011002012.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 16203855 + ... + 17452934.

It is an arithmetic number, because the mean of its divisors is an integer number (701138249280).

Almost surely, 2^{21020011002060} is an apocalyptic number.

21020011002060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21020011002060 is an abundant number, since it is smaller than the sum of its proper divisors (46289260928820).

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

21020011002060 is a wasteful number, since it uses less digits than its factorization.

21020011002060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33658295 (or 33658293 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Subtracting from 21020011002060 its product of nonzero digits (48), we obtain a palindrome (21020011002012).

Adding to 21020011002060 its reverse (6020011002012), we get a palindrome (27040022004072).

The spelling of 21020011002060 in words is "twenty-one trillion, twenty billion, eleven million, two thousand, sixty".