1021142212 has 24 divisors (see below), whose sum is σ = 1814271480. Its totient is φ = 502824960.

The previous prime is 1021142203. The next prime is 1021142267. The reversal of 1021142212 is 2122411201.

It can be written as a sum of positive squares in 4 ways, for example, as 56791296 + 964350916 = 7536^2 + 31054^2 .

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, 85912 + ... + 97072.

It is an arithmetic number, because the mean of its divisors is an integer number (75594645).

Almost surely, 2^1021142212 is an apocalyptic number.

It is an amenable number.

1021142212 is a deficient number, since it is larger than the sum of its proper divisors (793129268).

1021142212 is a wasteful number, since it uses less digits than its factorization.

1021142212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11511 (or 11509 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1021142212 is about 31955.3158645005. The cubic root of 1021142212 is about 1006.9983133594.

Adding to 1021142212 its reverse (2122411201), we get a palindrome (3143553413).

The spelling of 1021142212 in words is "one billion, twenty-one million, one hundred forty-two thousand, two hundred twelve".