1021120212 has 36 divisors (see below), whose sum is σ = 2771613600. Its totient is φ = 291748464.

The previous prime is 1021120187. The next prime is 1021120223. The reversal of 1021120212 is 2120211201.

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

It is a nialpdrome in base 14.

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 11 ways as a sum of consecutive naturals, for example, 867712 + ... + 868887.

Almost surely, 2^1021120212 is an apocalyptic number.

1021120212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021120212 is an abundant number, since it is smaller than the sum of its proper divisors (1750493388).

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

1021120212 is a wasteful number, since it uses less digits than its factorization.

1021120212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1736620 (or 1736611 counting only the distinct ones).

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

The square root of 1021120212 is about 31954.9716319699. The cubic root of 1021120212 is about 1006.9910815486.

Adding to 1021120212 its reverse (2120211201), we get a palindrome (3141331413).

The spelling of 1021120212 in words is "one billion, twenty-one million, one hundred twenty thousand, two hundred twelve".