1021212321102 has 48 divisors (see below), whose sum is σ = 2346772729392. Its totient is φ = 319834487040.

The previous prime is 1021212321029. The next prime is 1021212321161. The reversal of 1021212321102 is 2011232121201.

1021212321102 is a `hidden beast` number, since 10 + 21 + 212 + 321 + 102 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2663049 + ... + 3022292.

It is an arithmetic number, because the mean of its divisors is an integer number (48891098529).

Almost surely, 2^{1021212321102} is an apocalyptic number.

1021212321102 is an abundant number, since it is smaller than the sum of its proper divisors (1325560408290).

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

1021212321102 is a wasteful number, since it uses less digits than its factorization.

1021212321102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5685953 (or 5685950 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1021212321102 its reverse (2011232121201), we get a palindrome (3032444442303).

The spelling of 1021212321102 in words is "one trillion, twenty-one billion, two hundred twelve million, three hundred twenty-one thousand, one hundred two".