200122131231121 has 12 divisors (see below), whose sum is σ = 220071123030276. Its totient is φ = 181844709643520.

The previous prime is 200122131231101. The next prime is 200122131231131. The reversal of 200122131231121 is 121132131221002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 58118682320721 + 142003448910400 = 7623561^2 + 11916520^2 .

It is not a de Polignac number, because 200122131231121 - 2¹⁹ = 200122130706833 is a prime.

It is a super-2 number, since 2×200122131231121² (a number of 29 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 = 200122131231092 and 200122131231101.

It is not an unprimeable number, because it can be changed into a prime (200122131231101) 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, 383831896 + ... + 384352921.

It is an arithmetic number, because the mean of its divisors is an integer number (18339260252523).

Almost surely, 2^{200122131231121} is an apocalyptic number.

It is an amenable number.

200122131231121 is a deficient number, since it is larger than the sum of its proper divisors (19948991799155).

200122131231121 is a wasteful number, since it uses less digits than its factorization.

200122131231121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768186992 (or 768186981 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 200122131231121 its reverse (121132131221002), we get a palindrome (321254262452123).

The spelling of 200122131231121 in words is "two hundred trillion, one hundred twenty-two billion, one hundred thirty-one million, two hundred thirty-one thousand, one hundred twenty-one".