1020212121168 has 60 divisors (see below), whose sum is σ = 2857028006560. Its totient is φ = 339850237248.

The previous prime is 1020212121167. The next prime is 1020212121221. The reversal of 1020212121168 is 8611212120201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020212121167) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2073598 + ... + 2517981.

Almost surely, 2^{1020212121168} is an apocalyptic number.

1020212121168 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1020212121168 is an abundant number, since it is smaller than the sum of its proper divisors (1836815885392).

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

1020212121168 is a wasteful number, since it uses less digits than its factorization.

1020212121168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4593136 (or 4593127 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 27.

Adding to 1020212121168 its reverse (8611212120201), we get a palindrome (9631424241369).

The spelling of 1020212121168 in words is "one trillion, twenty billion, two hundred twelve million, one hundred twenty-one thousand, one hundred sixty-eight".