10021012 has 6 divisors (see below), whose sum is σ = 17536778. Its totient is φ = 5010504.

The previous prime is 10021003. The next prime is 10021027. The reversal of 10021012 is 21012001.

It can be written as a sum of positive squares in only one way, i.e., 9449476 + 571536 = 3074^2 + 756^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10020986 and 10021004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1252623 + ... + 1252630.

Almost surely, 2^10021012 is an apocalyptic number.

It is an amenable number.

10021012 is a deficient number, since it is larger than the sum of its proper divisors (7515766).

10021012 is a wasteful number, since it uses less digits than its factorization.

10021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2505257 (or 2505255 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 10021012 is about 3165.5982057109. The cubic root of 10021012 is about 215.5942600441.

Adding to 10021012 its reverse (21012001), we get a palindrome (31033013).

It can be divided in two parts, 100 and 21012, that added together give a palindrome (21112).

The spelling of 10021012 in words is "ten million, twenty-one thousand, twelve".