102020021121212 has 12 divisors (see below), whose sum is σ = 178535173600560. Its totient is φ = 51009971521056.

The previous prime is 102020021121197. The next prime is 102020021121233. The reversal of 102020021121212 is 212121120020201.

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, 3422912 + ... + 14688647.

It is an arithmetic number, because the mean of its divisors is an integer number (14877931133380).

Almost surely, 2^{102020021121212} is an apocalyptic number.

It is an amenable number.

102020021121212 is a deficient number, since it is larger than the sum of its proper divisors (76515152479348).

102020021121212 is a wasteful number, since it uses less digits than its factorization.

102020021121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19519780 (or 19519778 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 102020021121212 its reverse (212121120020201), we get a palindrome (314141141141413).

The spelling of 102020021121212 in words is "one hundred two trillion, twenty billion, twenty-one million, one hundred twenty-one thousand, two hundred twelve".