22120020020981 has 8 divisors (see below), whose sum is σ = 23421527610624. Its totient is φ = 20818549091520.

The previous prime is 22120020020977. The next prime is 22120020020983. The reversal of 22120020020981 is 18902002002122.

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 22120020020981 - 2² = 22120020020977 is a prime.

It is a super-2 number, since 2×22120020020981² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120020020983) 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, 7917935 + ... + 10340876.

It is an arithmetic number, because the mean of its divisors is an integer number (2927690951328).

Almost surely, 2^{22120020020981} is an apocalyptic number.

It is an amenable number.

22120020020981 is a deficient number, since it is larger than the sum of its proper divisors (1301507589643).

22120020020981 is a wasteful number, since it uses less digits than its factorization.

22120020020981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18330091.

The product of its (nonzero) digits is 2304, while the sum is 29.

The spelling of 22120020020981 in words is "twenty-two trillion, one hundred twenty billion, twenty million, twenty thousand, nine hundred eighty-one".