210001121102101 has 48 divisors (see below), whose sum is σ = 267042795674112. Its totient is φ = 163921842201600.

The previous prime is 210001121102083. The next prime is 210001121102153. The reversal of 210001121102101 is 101201121100012.

It is a happy number.

It is not a de Polignac number, because 210001121102101 - 2¹¹ = 210001121100053 is a prime.

It is a super-2 number, since 2×210001121102101² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210001121102501) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 163620870 + ... + 164899336.

It is an arithmetic number, because the mean of its divisors is an integer number (5563391576544).

Almost surely, 2^{210001121102101} is an apocalyptic number.

It is an amenable number.

210001121102101 is a deficient number, since it is larger than the sum of its proper divisors (57041674572011).

210001121102101 is a wasteful number, since it uses less digits than its factorization.

210001121102101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284890 (or 1284883 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 210001121102101 its reverse (101201121100012), we get a palindrome (311202242202113).

The spelling of 210001121102101 in words is "two hundred ten trillion, one billion, one hundred twenty-one million, one hundred two thousand, one hundred one".