22101020220021 has 16 divisors (see below), whose sum is σ = 29498666088960. Its totient is φ = 14718698474480.

The previous prime is 22101020219953. The next prime is 22101020220043. The reversal of 22101020220021 is 12002202010122.

It is a cyclic number.

It is not a de Polignac number, because 22101020220021 - 2¹¹ = 22101020217973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22101020220091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18940510 + ... + 20073488.

It is an arithmetic number, because the mean of its divisors is an integer number (1843666630560).

Almost surely, 2^{22101020220021} is an apocalyptic number.

It is an amenable number.

22101020220021 is a deficient number, since it is larger than the sum of its proper divisors (7397645868939).

22101020220021 is a wasteful number, since it uses less digits than its factorization.

22101020220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139736.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22101020220021 its reverse (12002202010122), we get a palindrome (34103222230143).

The spelling of 22101020220021 in words is "twenty-two trillion, one hundred one billion, twenty million, two hundred twenty thousand, twenty-one".