222122011202021 has 6 divisors (see below), whose sum is σ = 258386829357510. Its totient is φ = 190390295315976.

The previous prime is 222122011201991. The next prime is 222122011202033. The reversal of 222122011202021 is 120202110221222.

It can be written as a sum of positive squares in only one way, i.e., 170944799071396 + 51177212130625 = 13074586^2 + 7153825^2 .

It is not a de Polignac number, because 222122011202021 - 2⁶ = 222122011201957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222122011201984 and 222122011202002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222122011202071) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2266551134666 + ... + 2266551134763.

It is an arithmetic number, because the mean of its divisors is an integer number (43064471559585).

Almost surely, 2^{222122011202021} is an apocalyptic number.

It is an amenable number.

222122011202021 is a deficient number, since it is larger than the sum of its proper divisors (36264818155489).

222122011202021 is an equidigital number, since it uses as much as digits as its factorization.

222122011202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4533102269443 (or 4533102269436 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 222122011202021 its reverse (120202110221222), we get a palindrome (342324121423243).

The spelling of 222122011202021 in words is "two hundred twenty-two trillion, one hundred twenty-two billion, eleven million, two hundred two thousand, twenty-one".