2101220201001 has 8 divisors (see below), whose sum is σ = 2801633742720. Its totient is φ = 1400810063312.

The previous prime is 2101220200969. The next prime is 2101220201009. The reversal of 2101220201001 is 1001020221012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2101220201001 - 2⁵ = 2101220200969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2101220201009) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1587511 + ... + 2592803.

It is an arithmetic number, because the mean of its divisors is an integer number (350204217840).

Almost surely, 2^{2101220201001} is an apocalyptic number.

It is an amenable number.

2101220201001 is a deficient number, since it is larger than the sum of its proper divisors (700413541719).

2101220201001 is a wasteful number, since it uses less digits than its factorization.

2101220201001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1702015.

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

Adding to 2101220201001 its reverse (1001020221012), we get a palindrome (3102240422013).

The spelling of 2101220201001 in words is "two trillion, one hundred one billion, two hundred twenty million, two hundred one thousand, one".