2001012202220 has 12 divisors (see below), whose sum is σ = 4202125624704. Its totient is φ = 800404880880.

The previous prime is 2001012202201. The next prime is 2001012202223. The reversal of 2001012202220 is 222022101002.

It is a junction number, because it is equal to n+sod(n) for n = 2001012202195 and 2001012202204.

It is not an unprimeable number, because it can be changed into a prime (2001012202223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50025305036 + ... + 50025305075.

It is an arithmetic number, because the mean of its divisors is an integer number (350177135392).

Almost surely, 2^{2001012202220} is an apocalyptic number.

2001012202220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001012202220 is an abundant number, since it is smaller than the sum of its proper divisors (2201113422484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2001012202220 is a wasteful number, since it uses less digits than its factorization.

2001012202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100050610120 (or 100050610118 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 2001012202220 its reverse (222022101002), we get a palindrome (2223034303222).

The spelling of 2001012202220 in words is "two trillion, one billion, twelve million, two hundred two thousand, two hundred twenty".