2001011021022 has 64 divisors (see below), whose sum is σ = 4329541984320. Its totient is φ = 612889804800.

The previous prime is 2001011021017. The next prime is 2001011021047. The reversal of 2001011021022 is 2201201101002.

It is a junction number, because it is equal to n+sod(n) for n = 2001011020989 and 2001011021007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22070022 + ... + 22160502.

It is an arithmetic number, because the mean of its divisors is an integer number (67649093505).

Almost surely, 2^{2001011021022} is an apocalyptic number.

2001011021022 is an abundant number, since it is smaller than the sum of its proper divisors (2328530963298).

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

2001011021022 is a wasteful number, since it uses less digits than its factorization.

2001011021022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91789.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2001011021022 its reverse (2201201101002), we get a palindrome (4202212122024).

The spelling of 2001011021022 in words is "two trillion, one billion, eleven million, twenty-one thousand, twenty-two".