221123031011132 has 36 divisors (see below), whose sum is σ = 399253987362384. Its totient is φ = 107154792345600.

The previous prime is 221123031011123. The next prime is 221123031011137. The reversal of 221123031011132 is 231110130321122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 221123031011098 and 221123031011107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221123031011137) 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, 77153744 + ... + 79968407.

It is an arithmetic number, because the mean of its divisors is an integer number (11090388537844).

Almost surely, 2^{221123031011132} is an apocalyptic number.

It is an amenable number.

221123031011132 is a deficient number, since it is larger than the sum of its proper divisors (178130956351252).

221123031011132 is a wasteful number, since it uses less digits than its factorization.

221123031011132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157122486 (or 157122447 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 221123031011132 its reverse (231110130321122), we get a palindrome (452233161332254).

The spelling of 221123031011132 in words is "two hundred twenty-one trillion, one hundred twenty-three billion, thirty-one million, eleven thousand, one hundred thirty-two".