2101001021121 has 8 divisors (see below), whose sum is σ = 2814611163424. Its totient is φ = 1394029113120.

The previous prime is 2101001021107. The next prime is 2101001021131. The reversal of 2101001021121 is 1211201001012.

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

It is not a de Polignac number, because 2101001021121 - 2⁵ = 2101001021089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2101001021097 and 2101001021106.

It is not an unprimeable number, because it can be changed into a prime (2101001021131) 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, 1659557836 + ... + 1659559101.

It is an arithmetic number, because the mean of its divisors is an integer number (351826395428).

Almost surely, 2^{2101001021121} is an apocalyptic number.

It is an amenable number.

2101001021121 is a deficient number, since it is larger than the sum of its proper divisors (713610142303).

2101001021121 is a wasteful number, since it uses less digits than its factorization.

2101001021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3319117151.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 2101001021121 its reverse (1211201001012), we get a palindrome (3312202022133).

The spelling of 2101001021121 in words is "two trillion, one hundred one billion, one million, twenty-one thousand, one hundred twenty-one".