2202221210121 has 32 divisors (see below), whose sum is σ = 3339419466240. Its totient is φ = 1433576566800.

The previous prime is 2202221210099. The next prime is 2202221210171. The reversal of 2202221210121 is 1210121222022.

It is a happy number.

2202221210121 is a `hidden beast` number, since 220 + 2 + 221 + 210 + 12 + 1 = 666.

It is not a de Polignac number, because 2202221210121 - 2⁵ = 2202221210089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2202221210094 and 2202221210103.

It is not an unprimeable number, because it can be changed into a prime (2202221210171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3632386 + ... + 4195076.

It is an arithmetic number, because the mean of its divisors is an integer number (104356858320).

Almost surely, 2^{2202221210121} is an apocalyptic number.

It is an amenable number.

2202221210121 is a deficient number, since it is larger than the sum of its proper divisors (1137198256119).

2202221210121 is a wasteful number, since it uses less digits than its factorization.

2202221210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566114 (or 566108 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2202221210121 its reverse (1210121222022), we get a palindrome (3412342432143).

The spelling of 2202221210121 in words is "two trillion, two hundred two billion, two hundred twenty-one million, two hundred ten thousand, one hundred twenty-one".