221211011313100 has 36 divisors (see below), whose sum is σ = 482541129641088. Its totient is φ = 88021135384000.

The previous prime is 221211011313041. The next prime is 221211011313101. The reversal of 221211011313100 is 1313110112122.

It is a super-2 number, since 2×221211011313100² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221211011313101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5790845071 + ... + 5790883270.

It is an arithmetic number, because the mean of its divisors is an integer number (13403920267808).

Almost surely, 2^{221211011313100} is an apocalyptic number.

221211011313100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221211011313100 is an abundant number, since it is smaller than the sum of its proper divisors (261330118327988).

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

221211011313100 is a wasteful number, since it uses less digits than its factorization.

221211011313100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11581728546 (or 11581728539 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 221211011313100 its reverse (1313110112122), we get a palindrome (222524121425222).

The spelling of 221211011313100 in words is "two hundred twenty-one trillion, two hundred eleven billion, eleven million, three hundred thirteen thousand, one hundred".