212021200102 has 4 divisors (see below), whose sum is σ = 318031800156. Its totient is φ = 106010600050.

The previous prime is 212021200087. The next prime is 212021200169. The reversal of 212021200102 is 201002120212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53005300024 + ... + 53005300027.

It is an arithmetic number, because the mean of its divisors is an integer number (79507950039).

Almost surely, 2^212021200102 is an apocalyptic number.

212021200102 is a deficient number, since it is larger than the sum of its proper divisors (106010600054).

212021200102 is a wasteful number, since it uses less digits than its factorization.

212021200102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106010600053.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 212021200102 its reverse (201002120212), we get a palindrome (413023320314).

The spelling of 212021200102 in words is "two hundred twelve billion, twenty-one million, two hundred thousand, one hundred two".