11201031121231 has 16 divisors (see below), whose sum is σ = 14060790950400. Its totient is φ = 8700114395808.

The previous prime is 11201031121223. The next prime is 11201031121243. The reversal of 11201031121231 is 13212113010211.

It is not a de Polignac number, because 11201031121231 - 2³ = 11201031121223 is a prime.

It is a super-2 number, since 2×11201031121231² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11201031121199 and 11201031121208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201031122231) 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, 1830829096 + ... + 1830835213.

It is an arithmetic number, because the mean of its divisors is an integer number (878799434400).

Almost surely, 2^{11201031121231} is an apocalyptic number.

11201031121231 is a deficient number, since it is larger than the sum of its proper divisors (2859759829169).

11201031121231 is a wasteful number, since it uses less digits than its factorization.

11201031121231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3661664358.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 11201031121231 its reverse (13212113010211), we get a palindrome (24413144131442).

The spelling of 11201031121231 in words is "eleven trillion, two hundred one billion, thirty-one million, one hundred twenty-one thousand, two hundred thirty-one".