212051355503 has 32 divisors (see below), whose sum is σ = 237308332800. Its totient is φ = 188135571456.

The previous prime is 212051355493. The next prime is 212051355541. The reversal of 212051355503 is 305553150212.

It is a cyclic number.

It is not a de Polignac number, because 212051355503 - 2⁴ = 212051355487 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212051355503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212051354503) 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, 106397075 + ... + 106399067.

It is an arithmetic number, because the mean of its divisors is an integer number (7415885400).

Almost surely, 2^212051355503 is an apocalyptic number.

212051355503 is a deficient number, since it is larger than the sum of its proper divisors (25256977297).

212051355503 is a wasteful number, since it uses less digits than its factorization.

212051355503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3171.

The product of its (nonzero) digits is 22500, while the sum is 32.

The spelling of 212051355503 in words is "two hundred twelve billion, fifty-one million, three hundred fifty-five thousand, five hundred three".