212121100120102 has 16 divisors (see below), whose sum is σ = 318507557316192. Its totient is φ = 105951915856000.

The previous prime is 212121100120093. The next prime is 212121100120133. The reversal of 212121100120102 is 201021001121212.

It is a super-3 number, since 3×212121100120102³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 378168852 + ... + 378729352.

It is an arithmetic number, because the mean of its divisors is an integer number (19906722332262).

Almost surely, 2^{212121100120102} is an apocalyptic number.

212121100120102 is a deficient number, since it is larger than the sum of its proper divisors (106386457196090).

212121100120102 is a wasteful number, since it uses less digits than its factorization.

212121100120102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753983.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 212121100120102 its reverse (201021001121212), we get a palindrome (413142101241314).

The spelling of 212121100120102 in words is "two hundred twelve trillion, one hundred twenty-one billion, one hundred million, one hundred twenty thousand, one hundred two".