1001212202201 has 8 divisors (see below), whose sum is σ = 1012123446984. Its totient is φ = 990320531200.

The previous prime is 1001212202183. The next prime is 1001212202209. The reversal of 1001212202201 is 1022022121001.

It can be written as a sum of positive squares in 4 ways, for example, as 209717286601 + 791494915600 = 457949^2 + 889660^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001212202201 is a prime.

It is a super-2 number, since 2×1001212202201² (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 (1001212202209) 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, 4790576 + ... + 4995201.

It is an arithmetic number, because the mean of its divisors is an integer number (126515430873).

Almost surely, 2^{1001212202201} is an apocalyptic number.

It is an amenable number.

1001212202201 is a deficient number, since it is larger than the sum of its proper divisors (10911244783).

1001212202201 is a wasteful number, since it uses less digits than its factorization.

1001212202201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9786891.

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

Adding to 1001212202201 its reverse (1022022121001), we get a palindrome (2023234323202).

The spelling of 1001212202201 in words is "one trillion, one billion, two hundred twelve million, two hundred two thousand, two hundred one".