1222010121001 has 4 divisors (see below), whose sum is σ = 1222032069972. Its totient is φ = 1221988172032.

The previous prime is 1222010120993. The next prime is 1222010121011. The reversal of 1222010121001 is 1001210102221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 941528664976 + 280481456025 = 970324^2 + 529605^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222010121001 - 2³ = 1222010120993 is a prime.

It is a super-2 number, since 2×1222010121001² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222010121011) 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, 10890760 + ... + 11002393.

It is an arithmetic number, because the mean of its divisors is an integer number (305508017493).

Almost surely, 2^{1222010121001} is an apocalyptic number.

It is an amenable number.

1222010121001 is a deficient number, since it is larger than the sum of its proper divisors (21948971).

1222010121001 is an equidigital number, since it uses as much as digits as its factorization.

1222010121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21948970.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1222010121001 its reverse (1001210102221), we get a palindrome (2223220223222).

The spelling of 1222010121001 in words is "one trillion, two hundred twenty-two billion, ten million, one hundred twenty-one thousand, one".