2100212001121 has 8 divisors (see below), whose sum is σ = 2261978478144. Its totient is φ = 1938475768080.

The previous prime is 2100212001119. The next prime is 2100212001137. The reversal of 2100212001121 is 1211002120012.

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 2100212001121 - 2¹ = 2100212001119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2100212005121) 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, 7416661 + ... + 7694626.

It is an arithmetic number, because the mean of its divisors is an integer number (282747309768).

Almost surely, 2^{2100212001121} is an apocalyptic number.

It is an amenable number.

2100212001121 is a deficient number, since it is larger than the sum of its proper divisors (161766477023).

2100212001121 is a wasteful number, since it uses less digits than its factorization.

2100212001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15121991.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2100212001121 its reverse (1211002120012), we get a palindrome (3311214121133).

The spelling of 2100212001121 in words is "two trillion, one hundred billion, two hundred twelve million, one thousand, one hundred twenty-one".