2001212220202 has 128 divisors (see below), whose sum is σ = 3562574400000. Its totient is φ = 834745347072.

The previous prime is 2001212220187. The next prime is 2001212220229. The reversal of 2001212220202 is 2020222121002.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 420508699 + ... + 420513457.

It is an arithmetic number, because the mean of its divisors is an integer number (27832612500).

Almost surely, 2^{2001212220202} is an apocalyptic number.

2001212220202 is a deficient number, since it is larger than the sum of its proper divisors (1561362179798).

2001212220202 is a wasteful number, since it uses less digits than its factorization.

2001212220202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5168.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 2001212220202 its reverse (2020222121002), we get a palindrome (4021434341204).

The spelling of 2001212220202 in words is "two trillion, one billion, two hundred twelve million, two hundred twenty thousand, two hundred two".