2221100210021 has 32 divisors (see below), whose sum is σ = 2781889505280. Its totient is φ = 1722776846400.

The previous prime is 2221100210011. The next prime is 2221100210039. The reversal of 2221100210021 is 1200120011222.

It is a cyclic number.

It is not a de Polignac number, because 2221100210021 - 2⁶ = 2221100209957 is a prime.

It is a super-2 number, since 2×2221100210021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

2221100210021 is a modest number, since divided by 210021 gives 22211 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 2221100209978 and 2221100210005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221100210011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136834976 + ... + 136851206.

It is an arithmetic number, because the mean of its divisors is an integer number (86934047040).

Almost surely, 2^{2221100210021} is an apocalyptic number.

It is an amenable number.

2221100210021 is a deficient number, since it is larger than the sum of its proper divisors (560789295259).

2221100210021 is a wasteful number, since it uses less digits than its factorization.

2221100210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24305.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2221100210021 its reverse (1200120011222), we get a palindrome (3421220221243).

The spelling of 2221100210021 in words is "two trillion, two hundred twenty-one billion, one hundred million, two hundred ten thousand, twenty-one".