212662443919 has 6 divisors (see below), whose sum is σ = 215699881280. Its totient is φ = 209667193260.

The previous prime is 212662443907. The next prime is 212662443923. The reversal of 212662443919 is 919344266212.

It is not a de Polignac number, because 212662443919 - 2⁵ = 212662443887 is a prime.

It is a super-2 number, since 2×212662443919² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212662443949) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21088239 + ... + 21098320.

Almost surely, 2^212662443919 is an apocalyptic number.

212662443919 is a deficient number, since it is larger than the sum of its proper divisors (3037437361).

212662443919 is an frugal number, since it uses more digits than its factorization.

212662443919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42186701 (or 42186630 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 49.

The spelling of 212662443919 in words is "two hundred twelve billion, six hundred sixty-two million, four hundred forty-three thousand, nine hundred nineteen".