221211011120012 has 24 divisors (see below), whose sum is σ = 387261306551952. Its totient is φ = 110564924724800.

The previous prime is 221211011119853. The next prime is 221211011120027. The reversal of 221211011120012 is 210021110112122.

It is a super-2 number, since 2×221211011120012² (a number of 29 digits) contains 22 as substring.

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, 1132337462 + ... + 1132532802.

It is an arithmetic number, because the mean of its divisors is an integer number (16135887772998).

Almost surely, 2^{221211011120012} is an apocalyptic number.

It is an amenable number.

221211011120012 is a deficient number, since it is larger than the sum of its proper divisors (166050295431940).

221211011120012 is a wasteful number, since it uses less digits than its factorization.

221211011120012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297769 (or 297767 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 221211011120012 its reverse (210021110112122), we get a palindrome (431232121232134).

The spelling of 221211011120012 in words is "two hundred twenty-one trillion, two hundred eleven billion, eleven million, one hundred twenty thousand, twelve".