1021211012 has 48 divisors (see below), whose sum is σ = 2004186240. Its totient is φ = 452454912.

The previous prime is 1021211011. The next prime is 1021211033. The reversal of 1021211012 is 2101121201.

It is a junction number, because it is equal to n+sod(n) for n = 1021210984 and 1021211002.

It is not an unprimeable number, because it can be changed into a prime (1021211011) 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, 213398 + ... + 218130.

It is an arithmetic number, because the mean of its divisors is an integer number (41753880).

Almost surely, 2^1021211012 is an apocalyptic number.

It is an amenable number.

1021211012 is a deficient number, since it is larger than the sum of its proper divisors (982975228).

1021211012 is a wasteful number, since it uses less digits than its factorization.

1021211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4940 (or 4938 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1021211012 is about 31956.3923495754. The cubic root of 1021211012 is about 1007.0209285340.

Adding to 1021211012 its reverse (2101121201), we get a palindrome (3122332213).

The spelling of 1021211012 in words is "one billion, twenty-one million, two hundred eleven thousand, twelve".