1222012021001 has 8 divisors (see below), whose sum is σ = 1222619973960. Its totient is φ = 1221404164992.

The previous prime is 1222012020989. The next prime is 1222012021007. The reversal of 1222012021001 is 1001202102221.

It can be written as a sum of positive squares in 4 ways, for example, as 774618255376 + 447393765625 = 880124^2 + 668875^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1222012021001 - 2¹⁸ = 1222011758857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222012021007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42256535 + ... + 42285443.

It is an arithmetic number, because the mean of its divisors is an integer number (152827496745).

Almost surely, 2^{1222012021001} is an apocalyptic number.

It is an amenable number.

1222012021001 is a deficient number, since it is larger than the sum of its proper divisors (607952959).

1222012021001 is a wasteful number, since it uses less digits than its factorization.

1222012021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48475.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1222012021001 its reverse (1001202102221), we get a palindrome (2223214123222).

The spelling of 1222012021001 in words is "one trillion, two hundred twenty-two billion, twelve million, twenty-one thousand, one".