212137721702 has 8 divisors (see below), whose sum is σ = 318211653816. Its totient is φ = 106067170432.

The previous prime is 212137721701. The next prime is 212137721707. The reversal of 212137721702 is 207127731212.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212137721701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 682043 + ... + 943110.

It is an arithmetic number, because the mean of its divisors is an integer number (39776456727).

Almost surely, 2^212137721702 is an apocalyptic number.

212137721702 is a deficient number, since it is larger than the sum of its proper divisors (106073932114).

212137721702 is a wasteful number, since it uses less digits than its factorization.

212137721702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1690422.

The product of its (nonzero) digits is 16464, while the sum is 35.

The spelling of 212137721702 in words is "two hundred twelve billion, one hundred thirty-seven million, seven hundred twenty-one thousand, seven hundred two".