121012211000121 has 16 divisors (see below), whose sum is σ = 184401397638528. Its totient is φ = 69149145600000.

The previous prime is 121012211000101. The next prime is 121012211000123. The reversal of 121012211000121 is 121000112210121.

It is a happy number.

It is not a de Polignac number, because 121012211000121 - 2¹¹ = 121012210998073 is a prime.

It is a super-2 number, since 2×121012211000121² (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 121012211000121.

It is not an unprimeable number, because it can be changed into a prime (121012211000123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26558280 + ... + 30779321.

It is an arithmetic number, because the mean of its divisors is an integer number (11525087352408).

Almost surely, 2^{121012211000121} is an apocalyptic number.

It is an amenable number.

121012211000121 is a deficient number, since it is larger than the sum of its proper divisors (63389186638407).

121012211000121 is a wasteful number, since it uses less digits than its factorization.

121012211000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57438112.

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

Adding to 121012211000121 its reverse (121000112210121), we get a palindrome (242012323210242).

The spelling of 121012211000121 in words is "one hundred twenty-one trillion, twelve billion, two hundred eleven million, one hundred twenty-one", and thus it is an aban number.