133111121021031 has 4 divisors (see below), whose sum is σ = 177481494694712. Its totient is φ = 88740747347352.

The previous prime is 133111121021027. The next prime is 133111121021083. The reversal of 133111121021031 is 130120121111331.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 133111121021031 - 2² = 133111121021027 is a prime.

It is a super-2 number, since 2×133111121021031² (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 = 133111121020989 and 133111121021007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133111121023031) 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, 22185186836836 + ... + 22185186836841.

It is an arithmetic number, because the mean of its divisors is an integer number (44370373673678).

Almost surely, 2^{133111121021031} is an apocalyptic number.

133111121021031 is a deficient number, since it is larger than the sum of its proper divisors (44370373673681).

133111121021031 is an equidigital number, since it uses as much as digits as its factorization.

133111121021031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44370373673680.

The product of its (nonzero) digits is 108, while the sum is 21.

Adding to 133111121021031 its reverse (130120121111331), we get a palindrome (263231242132362).

The spelling of 133111121021031 in words is "one hundred thirty-three trillion, one hundred eleven billion, one hundred twenty-one million, twenty-one thousand, thirty-one".