22001211010021 has 16 divisors (see below), whose sum is σ = 22582294240000. Its totient is φ = 21429433037376.

The previous prime is 22001211010007. The next prime is 22001211010027. The reversal of 22001211010021 is 12001011210022.

It is a cyclic number.

It is not a de Polignac number, because 22001211010021 - 2⁵ = 22001211009989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22001211009983 and 22001211010010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001211010027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3606711 + ... + 7550548.

It is an arithmetic number, because the mean of its divisors is an integer number (1411393390000).

Almost surely, 2^{22001211010021} is an apocalyptic number.

It is an amenable number.

22001211010021 is a deficient number, since it is larger than the sum of its proper divisors (581083229979).

22001211010021 is a wasteful number, since it uses less digits than its factorization.

22001211010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11157676.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 22001211010021 its reverse (12001011210022), we get a palindrome (34002222220043).

The spelling of 22001211010021 in words is "twenty-two trillion, one billion, two hundred eleven million, ten thousand, twenty-one".