212111021010102 has 32 divisors (see below), whose sum is σ = 427276543948800. Its totient is φ = 70194596074848.

The previous prime is 212111021010041. The next prime is 212111021010113. The reversal of 212111021010102 is 201010120111212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159732828 + ... + 161055264.

It is an arithmetic number, because the mean of its divisors is an integer number (13352391998400).

Almost surely, 2^{212111021010102} is an apocalyptic number.

212111021010102 is an abundant number, since it is smaller than the sum of its proper divisors (215165522938698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212111021010102 is a wasteful number, since it uses less digits than its factorization.

212111021010102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1514900.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 212111021010102 its reverse (201010120111212), we get a palindrome (413121141121314).

The spelling of 212111021010102 in words is "two hundred twelve trillion, one hundred eleven billion, twenty-one million, ten thousand, one hundred two".