2001222012010 has 32 divisors (see below), whose sum is σ = 3890281484880. Its totient is φ = 736819488768.

The previous prime is 2001222012007. The next prime is 2001222012047. The reversal of 2001222012010 is 102102221002.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 382192259089 + 1619029752921 = 618217^2 + 1272411^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21758665 + ... + 21850444.

Almost surely, 2^{2001222012010} is an apocalyptic number.

2001222012010 is a deficient number, since it is larger than the sum of its proper divisors (1889059472870).

2001222012010 is a wasteful number, since it uses less digits than its factorization.

2001222012010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43609482.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2001222012010 its reverse (102102221002), we get a palindrome (2103324233012).

The spelling of 2001222012010 in words is "two trillion, one billion, two hundred twenty-two million, twelve thousand, ten".