30105455212 has 24 divisors (see below), whose sum is σ = 60261447456. Its totient is φ = 12891508608.

The previous prime is 30105455207. The next prime is 30105455213. The reversal of 30105455212 is 21255450103.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (30105455213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 417223 + ... + 484030.

It is an arithmetic number, because the mean of its divisors is an integer number (2510893644).

Almost surely, 2^30105455212 is an apocalyptic number.

It is an amenable number.

30105455212 is an abundant number, since it is smaller than the sum of its proper divisors (30155992244).

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

30105455212 is a wasteful number, since it uses less digits than its factorization.

30105455212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902457 (or 902455 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The spelling of 30105455212 in words is "thirty billion, one hundred five million, four hundred fifty-five thousand, two hundred twelve".