212000021495 has 8 divisors (see below), whose sum is σ = 254422862016. Its totient is φ = 169584793056.

The previous prime is 212000021491. The next prime is 212000021503. The reversal of 212000021495 is 594120000212.

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

It is a cyclic number.

It is not a de Polignac number, because 212000021495 - 2² = 212000021491 is a prime.

It is a super-2 number, since 2×212000021495² (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 (212000021491) 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, 1841567 + ... + 1953296.

It is an arithmetic number, because the mean of its divisors is an integer number (31802857752).

Almost surely, 2^212000021495 is an apocalyptic number.

212000021495 is a deficient number, since it is larger than the sum of its proper divisors (42422840521).

212000021495 is a wasteful number, since it uses less digits than its factorization.

212000021495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3806041.

The product of its (nonzero) digits is 1440, while the sum is 26.

The spelling of 212000021495 in words is "two hundred twelve billion, twenty-one thousand, four hundred ninety-five".