2231220100021 has 8 divisors (see below), whose sum is σ = 2435062883904. Its totient is φ = 2027544748320.

The previous prime is 2231220100001. The next prime is 2231220100027. The reversal of 2231220100021 is 1200010221322.

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 2231220100021 - 2¹¹ = 2231220097973 is a prime.

It is a super-3 number, since 3×2231220100021³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2231220099968 and 2231220100004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231220100027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41830176 + ... + 41883481.

It is an arithmetic number, because the mean of its divisors is an integer number (304382860488).

Almost surely, 2^{2231220100021} is an apocalyptic number.

It is an amenable number.

2231220100021 is a deficient number, since it is larger than the sum of its proper divisors (203842783883).

2231220100021 is a wasteful number, since it uses less digits than its factorization.

2231220100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83716091.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 2231220100021 its reverse (1200010221322), we get a palindrome (3431230321343).

The spelling of 2231220100021 in words is "two trillion, two hundred thirty-one billion, two hundred twenty million, one hundred thousand, twenty-one".