21022128401910 has 64 divisors (see below), whose sum is σ = 51534661432320. Its totient is φ = 5486900739840.

The previous prime is 21022128401863. The next prime is 21022128401921. The reversal of 21022128401910 is 1910482122012.

It is a congruent number.

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, 36351070 + ... + 36924849.

It is an arithmetic number, because the mean of its divisors is an integer number (805229084880).

Almost surely, 2^{21022128401910} is an apocalyptic number.

21022128401910 is an abundant number, since it is smaller than the sum of its proper divisors (30512533030410).

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

21022128401910 is a wasteful number, since it uses less digits than its factorization.

21022128401910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73276133.

The product of its (nonzero) digits is 4608, while the sum is 33.

The spelling of 21022128401910 in words is "twenty-one trillion, twenty-two billion, one hundred twenty-eight million, four hundred one thousand, nine hundred ten".