212001221020102 has 16 divisors (see below), whose sum is σ = 354429285917040. Its totient is φ = 94514476243968.

The previous prime is 212001221020073. The next prime is 212001221020109. The reversal of 212001221020102 is 201020122100212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212001221020109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164087631723 + ... + 164087633014.

It is an arithmetic number, because the mean of its divisors is an integer number (22151830369815).

Almost surely, 2^{212001221020102} is an apocalyptic number.

212001221020102 is a deficient number, since it is larger than the sum of its proper divisors (142428064896938).

212001221020102 is a wasteful number, since it uses less digits than its factorization.

212001221020102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328175264775.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212001221020102 its reverse (201020122100212), we get a palindrome (413021343120314).

The spelling of 212001221020102 in words is "two hundred twelve trillion, one billion, two hundred twenty-one million, twenty thousand, one hundred two".