222212022202021 has 2 divisors, whose sum is σ = 222212022202022. Its totient is φ = 222212022202020.

The previous prime is 222212022201977. The next prime is 222212022202087. The reversal of 222212022202021 is 120202220212222.

222212022202021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135702695722500 + 86509326479521 = 11649150^2 + 9301039^2 .

It is a cyclic number.

It is not a de Polignac number, because 222212022202021 - 2¹⁹ = 222212021677733 is a prime.

It is a super-2 number, since 2×222212022202021² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 222212022201983 and 222212022202001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222212022202091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111106011101010 + 111106011101011.

It is an arithmetic number, because the mean of its divisors is an integer number (111106011101011).

Almost surely, 2^{222212022202021} is an apocalyptic number.

It is an amenable number.

222212022202021 is a deficient number, since it is larger than the sum of its proper divisors (1).

222212022202021 is an equidigital number, since it uses as much as digits as its factorization.

222212022202021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 222212022202021 its reverse (120202220212222), we get a palindrome (342414242414243).

The spelling of 222212022202021 in words is "two hundred twenty-two trillion, two hundred twelve billion, twenty-two million, two hundred two thousand, twenty-one".