2001101020220 has 48 divisors (see below), whose sum is σ = 4217733166080. Its totient is φ = 797503841856.

The previous prime is 2001101020157. The next prime is 2001101020267. The reversal of 2001101020220 is 220201011002.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51503561 + ... + 51542399.

It is an arithmetic number, because the mean of its divisors is an integer number (87869440960).

Almost surely, 2^{2001101020220} is an apocalyptic number.

2001101020220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001101020220 is an abundant number, since it is smaller than the sum of its proper divisors (2216632145860).

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

2001101020220 is a wasteful number, since it uses less digits than its factorization.

2001101020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48234 (or 48232 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2001101020220 its reverse (220201011002), we get a palindrome (2221302031222).

The spelling of 2001101020220 in words is "two trillion, one billion, one hundred one million, twenty thousand, two hundred twenty".