21203525532000 has 384 divisors, whose sum is σ = 83564216386560. Its totient is φ = 4591439769600.

The previous prime is 21203525531957. The next prime is 21203525532023. The reversal of 21203525532000 is 23552530212.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5046709 + ... + 8238708.

It is an arithmetic number, because the mean of its divisors is an integer number (217615146840).

Almost surely, 2^{21203525532000} is an apocalyptic number.

21203525532000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21203525532000 is an abundant number, since it is smaller than the sum of its proper divisors (62360690854560).

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

21203525532000 is a wasteful number, since it uses less digits than its factorization.

21203525532000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13285471 (or 13285453 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

The spelling of 21203525532000 in words is "twenty-one trillion, two hundred three billion, five hundred twenty-five million, five hundred thirty-two thousand".