211201100102121 has 8 divisors (see below), whose sum is σ = 288150338124000. Its totient is φ = 137526297740832.

The previous prime is 211201100102077. The next prime is 211201100102123. The reversal of 211201100102121 is 121201001102112.

It is a happy number.

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

It is not a de Polignac number, because 211201100102121 - 2¹⁴ = 211201100085737 is a prime.

It is a super-2 number, since 2×211201100102121² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 211201100102121.

It is not an unprimeable number, because it can be changed into a prime (211201100102123) 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, 818608914996 + ... + 818608915253.

It is an arithmetic number, because the mean of its divisors is an integer number (36018792265500).

Almost surely, 2^{211201100102121} is an apocalyptic number.

It is an amenable number.

211201100102121 is a deficient number, since it is larger than the sum of its proper divisors (76949238021879).

211201100102121 is a wasteful number, since it uses less digits than its factorization.

211201100102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1637217830295.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 211201100102121 its reverse (121201001102112), we get a palindrome (332402101204233).

Subtracting from 211201100102121 its reverse (121201001102112), we obtain a palindrome (90000099000009).

The spelling of 211201100102121 in words is "two hundred eleven trillion, two hundred one billion, one hundred million, one hundred two thousand, one hundred twenty-one".