1211031102 has 32 divisors (see below), whose sum is σ = 2491074432. Its totient is φ = 392271264.

The previous prime is 1211031067. The next prime is 1211031119. The reversal of 1211031102 is 2011301121.

It is a super-2 number, since 2×1211031102² = 2933192660022668808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38913 + ... + 62739.

It is an arithmetic number, because the mean of its divisors is an integer number (77846076).

Almost surely, 2^1211031102 is an apocalyptic number.

1211031102 is an abundant number, since it is smaller than the sum of its proper divisors (1280043330).

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

1211031102 is a wasteful number, since it uses less digits than its factorization.

1211031102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24072.

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

The square root of 1211031102 is about 34799.8721549376. The cubic root of 1211031102 is about 1065.9048352919.

Adding to 1211031102 its reverse (2011301121), we get a palindrome (3222332223).

The spelling of 1211031102 in words is "one billion, two hundred eleven million, thirty-one thousand, one hundred two".