121001000211 has 48 divisors (see below), whose sum is σ = 220926806464. Its totient is φ = 62099695872.

The previous prime is 121001000191. The next prime is 121001000251. The reversal of 121001000211 is 112000100121.

It is a happy number.

It is not a de Polignac number, because 121001000211 - 2¹³ = 121000992019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 121001000193 and 121001000202.

It is not an unprimeable number, because it can be changed into a prime (121001000251) 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, 1966216 + ... + 2026821.

Almost surely, 2^121001000211 is an apocalyptic number.

121001000211 is a deficient number, since it is larger than the sum of its proper divisors (99925806253).

121001000211 is a wasteful number, since it uses less digits than its factorization.

121001000211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3993100 (or 3993097 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 121001000211 its reverse (112000100121), we get a palindrome (233001100332).

The spelling of 121001000211 in words is "one hundred twenty-one billion, one million, two hundred eleven", and thus it is an aban number.