1213111302102 has 40 divisors (see below), whose sum is σ = 3106591908816. Its totient is φ = 346603228848.

The previous prime is 1213111302101. The next prime is 1213111302127. The reversal of 1213111302102 is 2012031113121.

1213111302102 is a `hidden beast` number, since 12 + 1 + 311 + 130 + 210 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213111302101) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 534880393 + ... + 534882660.

Almost surely, 2^{1213111302102} is an apocalyptic number.

1213111302102 is an abundant number, since it is smaller than the sum of its proper divisors (1893480606714).

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

1213111302102 is a wasteful number, since it uses less digits than its factorization.

1213111302102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069763074 (or 1069763065 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1213111302102 its reverse (2012031113121), we get a palindrome (3225142415223).

The spelling of 1213111302102 in words is "one trillion, two hundred thirteen billion, one hundred eleven million, three hundred two thousand, one hundred two".