2101221020111 has 8 divisors (see below), whose sum is σ = 2192606838240. Its totient is φ = 2009837567232.

The previous prime is 2101221020071. The next prime is 2101221020113. The reversal of 2101221020111 is 1110201221012.

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 2101221020111 - 2³⁸ = 1826343113167 is a prime.

It is a super-2 number, since 2×2101221020111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101221020113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1361291 + ... + 2460803.

It is an arithmetic number, because the mean of its divisors is an integer number (274075854780).

Almost surely, 2^{2101221020111} is an apocalyptic number.

2101221020111 is a deficient number, since it is larger than the sum of its proper divisors (91385818129).

2101221020111 is a wasteful number, since it uses less digits than its factorization.

2101221020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182625.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2101221020111 its reverse (1110201221012), we get a palindrome (3211422241123).

The spelling of 2101221020111 in words is "two trillion, one hundred one billion, two hundred twenty-one million, twenty thousand, one hundred eleven".