1021212101200 has 60 divisors (see below), whose sum is σ = 2458153708768. Its totient is φ = 407703715200.

The previous prime is 1021212101177. The next prime is 1021212101269. The reversal of 1021212101200 is 21012121201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2231556 + ... + 2649955.

Almost surely, 2^{1021212101200} is an apocalyptic number.

1021212101200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021212101200 is an abundant number, since it is smaller than the sum of its proper divisors (1436941607568).

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

1021212101200 is a wasteful number, since it uses less digits than its factorization.

1021212101200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4882052 (or 4882041 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1021212101200 its reverse (21012121201), we get a palindrome (1042224222401).

The spelling of 1021212101200 in words is "one trillion, twenty-one billion, two hundred twelve million, one hundred one thousand, two hundred".