1011031212 has 12 divisors (see below), whose sum is σ = 2359072856. Its totient is φ = 337010400.

The previous prime is 1011031169. The next prime is 1011031223. The reversal of 1011031212 is 2121301101.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1011031212² = 2044368223276377888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 84252601 = 1011031212 / (1 + 0 + 1 + 1 + 0 + 3 + 1 + 2 + 1 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42126289 + ... + 42126312.

Almost surely, 2^1011031212 is an apocalyptic number.

1011031212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1011031212 is an abundant number, since it is smaller than the sum of its proper divisors (1348041644).

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

1011031212 is a wasteful number, since it uses less digits than its factorization.

1011031212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84252608 (or 84252606 counting only the distinct ones).

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

The square root of 1011031212 is about 31796.7170003445. The cubic root of 1011031212 is about 1003.6636320753.

Adding to 1011031212 its reverse (2121301101), we get a palindrome (3132332313).

The spelling of 1011031212 in words is "one billion, eleven million, thirty-one thousand, two hundred twelve".