221020000120012 has 24 divisors (see below), whose sum is σ = 393188933953872. Its totient is φ = 108680887156800.

The previous prime is 221020000120001. The next prime is 221020000120027. The reversal of 221020000120012 is 210021000020122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 221020000119974 and 221020000120001.

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, 71285458 + ... + 74321305.

It is an arithmetic number, because the mean of its divisors is an integer number (16382872248078).

Almost surely, 2^{221020000120012} is an apocalyptic number.

It is an amenable number.

221020000120012 is a deficient number, since it is larger than the sum of its proper divisors (172168933833860).

221020000120012 is a wasteful number, since it uses less digits than its factorization.

221020000120012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145613049 (or 145613047 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 221020000120012 its reverse (210021000020122), we get a palindrome (431041000140134).

The spelling of 221020000120012 in words is "two hundred twenty-one trillion, twenty billion, one hundred twenty thousand, twelve".