2001101221018 has 32 divisors (see below), whose sum is σ = 3040027663680. Its totient is φ = 987851427840.

The previous prime is 2001101220997. The next prime is 2001101221051. The reversal of 2001101221018 is 8101221011002.

It is a junction number, because it is equal to n+sod(n) for n = 2001101220986 and 2001101221004.

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, 43773553 + ... + 43819243.

It is an arithmetic number, because the mean of its divisors is an integer number (95000864490).

Almost surely, 2^{2001101221018} is an apocalyptic number.

2001101221018 is a deficient number, since it is larger than the sum of its proper divisors (1038926442662).

2001101221018 is a wasteful number, since it uses less digits than its factorization.

2001101221018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46702.

The product of its (nonzero) digits is 64, while the sum is 19.

The spelling of 2001101221018 in words is "two trillion, one billion, one hundred one million, two hundred twenty-one thousand, eighteen".