21119900370 has 32 divisors (see below), whose sum is σ = 50697128448. Its totient is φ = 5630932608.

The previous prime is 21119900341. The next prime is 21119900371. The reversal of 21119900370 is 7300991112.

It is a super-2 number, since 2×21119900370² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21119900371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107487 + ... + 231933.

It is an arithmetic number, because the mean of its divisors is an integer number (1584285264).

Almost surely, 2^21119900370 is an apocalyptic number.

21119900370 is an abundant number, since it is smaller than the sum of its proper divisors (29577228078).

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

21119900370 is a wasteful number, since it uses less digits than its factorization.

21119900370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130114.

The product of its (nonzero) digits is 3402, while the sum is 33.

The spelling of 21119900370 in words is "twenty-one billion, one hundred nineteen million, nine hundred thousand, three hundred seventy".