212961015986 has 4 divisors (see below), whose sum is σ = 319441523982. Its totient is φ = 106480507992.

The previous prime is 212961015973. The next prime is 212961016049. The reversal of 212961015986 is 689510169212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 188160750625 + 24800265361 = 433775^2 + 157481^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53240253995 + ... + 53240253998.

Almost surely, 2^212961015986 is an apocalyptic number.

212961015986 is a deficient number, since it is larger than the sum of its proper divisors (106480507996).

212961015986 is a wasteful number, since it uses less digits than its factorization.

212961015986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106480507995.

The product of its (nonzero) digits is 466560, while the sum is 50.

The spelling of 212961015986 in words is "two hundred twelve billion, nine hundred sixty-one million, fifteen thousand, nine hundred eighty-six".