102021221121212 has 12 divisors (see below), whose sum is σ = 187933828381320. Its totient is φ = 48325841583696.

The previous prime is 102021221121187. The next prime is 102021221121247. The reversal of 102021221121212 is 212121122120201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 671192244143 + ... + 671192244294.

It is an arithmetic number, because the mean of its divisors is an integer number (15661152365110).

Almost surely, 2^{102021221121212} is an apocalyptic number.

It is an amenable number.

102021221121212 is a deficient number, since it is larger than the sum of its proper divisors (85912607260108).

102021221121212 is a wasteful number, since it uses less digits than its factorization.

102021221121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342384488460 (or 1342384488458 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 102021221121212 its reverse (212121122120201), we get a palindrome (314142343241413).

The spelling of 102021221121212 in words is "one hundred two trillion, twenty-one billion, two hundred twenty-one million, one hundred twenty-one thousand, two hundred twelve".