221011101012012 has 24 divisors (see below), whose sum is σ = 516021664521216. Its totient is φ = 73623353362128.

The previous prime is 221011101011977. The next prime is 221011101012029. The reversal of 221011101012012 is 210210101110122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 221011101011982 and 221011101012000.

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, 5876685648 + ... + 5876723255.

It is an arithmetic number, because the mean of its divisors is an integer number (21500902688384).

Almost surely, 2^{221011101012012} is an apocalyptic number.

It is an amenable number.

221011101012012 is an abundant number, since it is smaller than the sum of its proper divisors (295010563509204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221011101012012 is a wasteful number, since it uses less digits than its factorization.

221011101012012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11753410477 (or 11753410475 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 221011101012012 its reverse (210210101110122), we get a palindrome (431221202122134).

The spelling of 221011101012012 in words is "two hundred twenty-one trillion, eleven billion, one hundred one million, twelve thousand, twelve".