1111021212 has 48 divisors (see below), whose sum is σ = 3012952320. Its totient is φ = 312052992.

The previous prime is 1111021211. The next prime is 1111021231. The reversal of 1111021212 is 2121201111.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111021211) 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, 107133 + ... + 117044.

It is an arithmetic number, because the mean of its divisors is an integer number (62769840).

Almost surely, 2^1111021212 is an apocalyptic number.

1111021212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1111021212 is an abundant number, since it is smaller than the sum of its proper divisors (1901931108).

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

1111021212 is a wasteful number, since it uses less digits than its factorization.

1111021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224250 (or 224248 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 1111021212 is about 33331.9848193893. The cubic root of 1111021212 is about 1035.7162341539.

Adding to 1111021212 its reverse (2121201111), we get a palindrome (3232222323).

The spelling of 1111021212 in words is "one billion, one hundred eleven million, twenty-one thousand, two hundred twelve".