221001101012 has 12 divisors (see below), whose sum is σ = 387311630496. Its totient is φ = 110340635160.

The previous prime is 221001101003. The next prime is 221001101059. The reversal of 221001101012 is 210101100122.

It is a junction number, because it is equal to n+sod(n) for n = 221001100984 and 221001101002.

It is a congruent number.

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, 39975728 + ... + 39981255.

It is an arithmetic number, because the mean of its divisors is an integer number (32275969208).

Almost surely, 2^221001101012 is an apocalyptic number.

It is an amenable number.

221001101012 is a deficient number, since it is larger than the sum of its proper divisors (166310529484).

221001101012 is a wasteful number, since it uses less digits than its factorization.

221001101012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79957678 (or 79957676 counting only the distinct ones).

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

Adding to 221001101012 its reverse (210101100122), we get a palindrome (431102201134).

The spelling of 221001101012 in words is "two hundred twenty-one billion, one million, one hundred one thousand, twelve".