2001011212202 has 4 divisors (see below), whose sum is σ = 3001516818306. Its totient is φ = 1000505606100.

The previous prime is 2001011212169. The next prime is 2001011212243. The reversal of 2001011212202 is 2022121101002.

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

It can be written as a sum of positive squares in only one way, i.e., 1880658419641 + 120352792561 = 1371371^2 + 346919^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500252803049 + ... + 500252803052.

Almost surely, 2^{2001011212202} is an apocalyptic number.

2001011212202 is a deficient number, since it is larger than the sum of its proper divisors (1000505606104).

2001011212202 is a wasteful number, since it uses less digits than its factorization.

2001011212202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000505606103.

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

Adding to 2001011212202 its reverse (2022121101002), we get a palindrome (4023132313204).

The spelling of 2001011212202 in words is "two trillion, one billion, eleven million, two hundred twelve thousand, two hundred two".