162121444231 has 16 divisors (see below), whose sum is σ = 172220787360. Its totient is φ = 152084992000.

The previous prime is 162121444211. The next prime is 162121444249. The reversal of 162121444231 is 132444121261.

It is a happy number.

It is not a de Polignac number, because 162121444231 - 2¹¹ = 162121442183 is a prime.

It is a super-2 number, since 2×162121444231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 162121444193 and 162121444202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162121444211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23598465 + ... + 23605333.

It is an arithmetic number, because the mean of its divisors is an integer number (10763799210).

Almost surely, 2^162121444231 is an apocalyptic number.

162121444231 is a deficient number, since it is larger than the sum of its proper divisors (10099343129).

162121444231 is a wasteful number, since it uses less digits than its factorization.

162121444231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11234.

The product of its digits is 9216, while the sum is 31.

Adding to 162121444231 its reverse (132444121261), we get a palindrome (294565565492).

The spelling of 162121444231 in words is "one hundred sixty-two billion, one hundred twenty-one million, four hundred forty-four thousand, two hundred thirty-one".