1213101102 has 32 divisors (see below), whose sum is σ = 2453703840. Its totient is φ = 399795200.

The previous prime is 1213101053. The next prime is 1213101103. The reversal of 1213101102 is 2011013121.

It is a super-2 number, since 2×1213101102² = 2943228567347228808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213101103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 780358 + ... + 781910.

It is an arithmetic number, because the mean of its divisors is an integer number (76678245).

Almost surely, 2^1213101102 is an apocalyptic number.

1213101102 is an abundant number, since it is smaller than the sum of its proper divisors (1240602738).

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

1213101102 is a wasteful number, since it uses less digits than its factorization.

1213101102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2948.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 1213101102 is about 34829.6009451731. The cubic root of 1213101102 is about 1066.5118021047.

Adding to 1213101102 its reverse (2011013121), we get a palindrome (3224114223).

The spelling of 1213101102 in words is "one billion, two hundred thirteen million, one hundred one thousand, one hundred two".