21354551202 has 8 divisors (see below), whose sum is σ = 42709102416. Its totient is φ = 7118183732.

The previous prime is 21354551201. The next prime is 21354551209. The reversal of 21354551202 is 20215545312.

It is a sphenic number, since it is the product of 3 distinct primes.

21354551202 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 21354551202.

It is not an unprimeable number, because it can be changed into a prime (21354551201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1779545928 + ... + 1779545939.

It is an arithmetic number, because the mean of its divisors is an integer number (5338637802).

Almost surely, 2^21354551202 is an apocalyptic number.

21354551202 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21354551202 is a wasteful number, since it uses less digits than its factorization.

21354551202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3559091872.

The product of its (nonzero) digits is 12000, while the sum is 30.

The spelling of 21354551202 in words is "twenty-one billion, three hundred fifty-four million, five hundred fifty-one thousand, two hundred two".