2101000213021 has 8 divisors (see below), whose sum is σ = 2102863442400. Its totient is φ = 2099137294800.

The previous prime is 2101000212947. The next prime is 2101000213099. The reversal of 2101000213021 is 1203120001012.

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 2101000213021 - 2²¹ = 2100998115869 is a prime.

It is a super-2 number, since 2×2101000213021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2101000212992 and 2101000213010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101000213121) 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, 14660250 + ... + 14802868.

It is an arithmetic number, because the mean of its divisors is an integer number (262857930300).

Almost surely, 2^{2101000213021} is an apocalyptic number.

It is an amenable number.

2101000213021 is a deficient number, since it is larger than the sum of its proper divisors (1863229379).

2101000213021 is a wasteful number, since it uses less digits than its factorization.

2101000213021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155579.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 2101000213021 its reverse (1203120001012), we get a palindrome (3304120214033).

The spelling of 2101000213021 in words is "two trillion, one hundred one billion, two hundred thirteen thousand, twenty-one".