2311121101021 has 8 divisors (see below), whose sum is σ = 2323555740000. Its totient is φ = 2298693564048.

The previous prime is 2311121100961. The next prime is 2311121101027. The reversal of 2311121101021 is 1201011211132.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2311121101021 - 2¹³ = 2311121092829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2311121100986 and 2311121101004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311121101027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1122271 + ... + 2425228.

It is an arithmetic number, because the mean of its divisors is an integer number (290444467500).

Almost surely, 2^{2311121101021} is an apocalyptic number.

It is an amenable number.

2311121101021 is a deficient number, since it is larger than the sum of its proper divisors (12434638979).

2311121101021 is a wasteful number, since it uses less digits than its factorization.

2311121101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3551003.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 2311121101021 its reverse (1201011211132), we get a palindrome (3512132312153).

It can be divided in two parts, 2311121 and 101021, that added together give a palindrome (2412142).

The spelling of 2311121101021 in words is "two trillion, three hundred eleven billion, one hundred twenty-one million, one hundred one thousand, twenty-one".