210011000100121 has 24 divisors (see below), whose sum is σ = 231300064222920. Its totient is φ = 190537403105280.

The previous prime is 210011000100103. The next prime is 210011000100127. The reversal of 210011000100121 is 121001000110012.

It can be written as a sum of positive squares in 4 ways, for example, as 77430513890521 + 132580486209600 = 8799461^2 + 11514360^2 .

It is not a de Polignac number, because 210011000100121 - 2¹⁵ = 210011000067353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210011000100098 and 210011000100107.

It is not an unprimeable number, because it can be changed into a prime (210011000100127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3090317275 + ... + 3090385231.

It is an arithmetic number, because the mean of its divisors is an integer number (9637502675955).

Almost surely, 2^{210011000100121} is an apocalyptic number.

It is an amenable number.

210011000100121 is a deficient number, since it is larger than the sum of its proper divisors (21289064122799).

210011000100121 is a wasteful number, since it uses less digits than its factorization.

210011000100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118665 (or 118654 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 210011000100121 its reverse (121001000110012), we get a palindrome (331012000210133).

The spelling of 210011000100121 in words is "two hundred ten trillion, eleven billion, one hundred thousand, one hundred twenty-one".