21227452050 has 96 divisors (see below), whose sum is σ = 63703815552. Its totient is φ = 4566574080.

The previous prime is 21227451989. The next prime is 21227452069. The reversal of 21227452050 is 5025472212.

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

It is a junction number, because it is equal to n+sod(n) for n = 21227451999 and 21227452017.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 576757 + ... + 612456.

It is an arithmetic number, because the mean of its divisors is an integer number (663581412).

Almost surely, 2^21227452050 is an apocalyptic number.

21227452050 is an abundant number, since it is smaller than the sum of its proper divisors (42476363502).

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

21227452050 is a wasteful number, since it uses less digits than its factorization.

21227452050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1189252 (or 1189247 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 30.

The spelling of 21227452050 in words is "twenty-one billion, two hundred twenty-seven million, four hundred fifty-two thousand, fifty".