201222423131 has 4 divisors (see below), whose sum is σ = 211813077000. Its totient is φ = 190631769264.

The previous prime is 201222423121. The next prime is 201222423203. The reversal of 201222423131 is 131324222102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131324222102 = 2 ⋅65662111051.

It is a cyclic number.

It is not a de Polignac number, because 201222423131 - 2¹⁸ = 201222160987 is a prime.

It is a super-2 number, since 2×201222423131² (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 = 201222423097 and 201222423106.

It is not an unprimeable number, because it can be changed into a prime (201222423121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5295326906 + ... + 5295326943.

It is an arithmetic number, because the mean of its divisors is an integer number (52953269250).

Almost surely, 2^201222423131 is an apocalyptic number.

201222423131 is a deficient number, since it is larger than the sum of its proper divisors (10590653869).

201222423131 is a wasteful number, since it uses less digits than its factorization.

201222423131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10590653868.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 201222423131 its reverse (131324222102), we get a palindrome (332546645233).

The spelling of 201222423131 in words is "two hundred one billion, two hundred twenty-two million, four hundred twenty-three thousand, one hundred thirty-one".