2221201210122 has 40 divisors (see below), whose sum is σ = 4979561113956. Its totient is φ = 740039649408.

The previous prime is 2221201210091. The next prime is 2221201210147. The reversal of 2221201210122 is 2210121021222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1906826812641 + 314374397481 = 1380879^2 + 560691^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2221201210095 and 2221201210104.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3006703 + ... + 3671874.

Almost surely, 2^{2221201210122} is an apocalyptic number.

2221201210122 is an abundant number, since it is smaller than the sum of its proper divisors (2758359903834).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2221201210122 is a wasteful number, since it uses less digits than its factorization.

2221201210122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6680644 (or 6680635 counting only the distinct ones).

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

Adding to 2221201210122 its reverse (2210121021222), we get a palindrome (4431322231344).

The spelling of 2221201210122 in words is "two trillion, two hundred twenty-one billion, two hundred one million, two hundred ten thousand, one hundred twenty-two".