10021111012 has 12 divisors (see below), whose sum is σ = 19131212016. Its totient is φ = 4555050440.

The previous prime is 10021110973. The next prime is 10021111013. The reversal of 10021111012 is 21011112001.

It is a self number, because there is not a number n which added to its sum of digits gives 10021111012.

It is not an unprimeable number, because it can be changed into a prime (10021111013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113876218 + ... + 113876305.

It is an arithmetic number, because the mean of its divisors is an integer number (1594267668).

Almost surely, 2^10021111012 is an apocalyptic number.

It is an amenable number.

10021111012 is a deficient number, since it is larger than the sum of its proper divisors (9110101004).

10021111012 is a wasteful number, since it uses less digits than its factorization.

10021111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227752538 (or 227752536 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 10021111012 its reverse (21011112001), we get a palindrome (31032223013).

It can be divided in two parts, 100 and 21111012, that added together give a palindrome (21111112).

The spelling of 10021111012 in words is "ten billion, twenty-one million, one hundred eleven thousand, twelve".