212115569390 has 8 divisors (see below), whose sum is σ = 381808024920. Its totient is φ = 84846227752.

The previous prime is 212115569389. The next prime is 212115569423. The reversal of 212115569390 is 93965511212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10605778460 + ... + 10605778479.

It is an arithmetic number, because the mean of its divisors is an integer number (47726003115).

Almost surely, 2^212115569390 is an apocalyptic number.

212115569390 is a deficient number, since it is larger than the sum of its proper divisors (169692455530).

212115569390 is a wasteful number, since it uses less digits than its factorization.

212115569390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21211556946.

The product of its (nonzero) digits is 145800, while the sum is 44.

The spelling of 212115569390 in words is "two hundred twelve billion, one hundred fifteen million, five hundred sixty-nine thousand, three hundred ninety".