212561030 has 64 divisors (see below), whose sum is σ = 444958272. Its totient is φ = 72253440.

The previous prime is 212561021. The next prime is 212561033. The reversal of 212561030 is 30165212.

212561030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 212560993 and 212561011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212561033) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 368102 + ... + 368678.

It is an arithmetic number, because the mean of its divisors is an integer number (6952473).

Almost surely, 2^212561030 is an apocalyptic number.

212561030 is an abundant number, since it is smaller than the sum of its proper divisors (232397242).

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

212561030 is a wasteful number, since it uses less digits than its factorization.

212561030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 212561030 is about 14579.4728985653. The cubic root of 212561030 is about 596.7987185576.

The spelling of 212561030 in words is "two hundred twelve million, five hundred sixty-one thousand, thirty".