221111020012 has 12 divisors (see below), whose sum is σ = 390494233360. Its totient is φ = 109541239056.

The previous prime is 221111020003. The next prime is 221111020021. The reversal of 221111020012 is 210020111122.

It is an interprime number because it is at equal distance from previous prime (221111020003) and next prime (221111020021).

It is a junction number, because it is equal to n+sod(n) for n = 221111019974 and 221111020001.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253567248 + ... + 253568119.

Almost surely, 2^221111020012 is an apocalyptic number.

It is an amenable number.

221111020012 is a deficient number, since it is larger than the sum of its proper divisors (169383213348).

221111020012 is a wasteful number, since it uses less digits than its factorization.

221111020012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507135480 (or 507135478 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221111020012 its reverse (210020111122), we get a palindrome (431131131134).

The spelling of 221111020012 in words is "two hundred twenty-one billion, one hundred eleven million, twenty thousand, twelve".