201121001022031 has 16 divisors (see below), whose sum is σ = 213118923757824. Its totient is φ = 189141700091904.

The previous prime is 201121001021987. The next prime is 201121001022091. The reversal of 201121001022031 is 130220100121102.

It is a cyclic number.

It is not a de Polignac number, because 201121001022031 - 2³⁵ = 201086641283663 is a prime.

It is a super-2 number, since 2×201121001022031² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201121001021996 and 201121001022014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201121001022091) 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, 181471831 + ... + 182576743.

It is an arithmetic number, because the mean of its divisors is an integer number (13319932734864).

Almost surely, 2^{201121001022031} is an apocalyptic number.

201121001022031 is a deficient number, since it is larger than the sum of its proper divisors (11997922735793).

201121001022031 is a wasteful number, since it uses less digits than its factorization.

201121001022031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113330.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 201121001022031 its reverse (130220100121102), we get a palindrome (331341101143133).

The spelling of 201121001022031 in words is "two hundred one trillion, one hundred twenty-one billion, one million, twenty-two thousand, thirty-one".