20305055212 has 24 divisors (see below), whose sum is σ = 39301472336. Its totient is φ = 9118277568.

The previous prime is 20305055189. The next prime is 20305055231. The reversal of 20305055212 is 21255050302.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5274858 + ... + 5278705.

Almost surely, 2^20305055212 is an apocalyptic number.

It is an amenable number.

20305055212 is a deficient number, since it is larger than the sum of its proper divisors (18996417124).

20305055212 is a wasteful number, since it uses less digits than its factorization.

20305055212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10553617 (or 10553615 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The spelling of 20305055212 in words is "twenty billion, three hundred five million, fifty-five thousand, two hundred twelve".