222020110010021 has 4 divisors (see below), whose sum is σ = 223490441864544. Its totient is φ = 220549778155500.

The previous prime is 222020110009903. The next prime is 222020110010047. The reversal of 222020110010021 is 120010011020222.

222020110010021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222020110010021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222020110009978 and 222020110010005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222020110013021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 735165927035 + ... + 735165927336.

It is an arithmetic number, because the mean of its divisors is an integer number (55872610466136).

Almost surely, 2^{222020110010021} is an apocalyptic number.

It is an amenable number.

222020110010021 is a deficient number, since it is larger than the sum of its proper divisors (1470331854523).

222020110010021 is a wasteful number, since it uses less digits than its factorization.

222020110010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1470331854522.

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

Adding to 222020110010021 its reverse (120010011020222), we get a palindrome (342030121030243).

The spelling of 222020110010021 in words is "two hundred twenty-two trillion, twenty billion, one hundred ten million, ten thousand, twenty-one".