1102021212 has 24 divisors (see below), whose sum is σ = 2602365696. Its totient is φ = 362914288.

The previous prime is 1102021189. The next prime is 1102021231. The reversal of 1102021212 is 2121202011.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 552228 + ... + 554219.

It is an arithmetic number, because the mean of its divisors is an integer number (108431904).

Almost surely, 2^1102021212 is an apocalyptic number.

1102021212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1102021212 is an abundant number, since it is smaller than the sum of its proper divisors (1500344484).

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

1102021212 is a wasteful number, since it uses less digits than its factorization.

1102021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106537 (or 1106535 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1102021212 is about 33196.7048364744. The cubic root of 1102021212 is about 1032.9119882833.

Adding to 1102021212 its reverse (2121202011), we get a palindrome (3223223223).

The spelling of 1102021212 in words is "one billion, one hundred two million, twenty-one thousand, two hundred twelve".