10021220312 has 32 divisors (see below), whose sum is σ = 19820160000. Its totient is φ = 4736949408.

The previous prime is 10021220243. The next prime is 10021220327. The reversal of 10021220312 is 21302212001.

It is a happy number.

It is a super-3 number, since 3×10021220312³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

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, 3989 + ... + 141627.

It is an arithmetic number, because the mean of its divisors is an integer number (619380000).

Almost surely, 2^10021220312 is an apocalyptic number.

It is an amenable number.

10021220312 is a deficient number, since it is larger than the sum of its proper divisors (9798939688).

10021220312 is a wasteful number, since it uses less digits than its factorization.

10021220312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138143 (or 138139 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 10021220312 its reverse (21302212001), we get a palindrome (31323432313).

The spelling of 10021220312 in words is "ten billion, twenty-one million, two hundred twenty thousand, three hundred twelve".