121020002212111 has 4 divisors (see below), whose sum is σ = 122826270901912. Its totient is φ = 119213733522312.

The previous prime is 121020002212097. The next prime is 121020002212117. The reversal of 121020002212111 is 111212200020121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121020002212111 - 2¹⁵ = 121020002179343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121020002212117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 903134344800 + ... + 903134344933.

It is an arithmetic number, because the mean of its divisors is an integer number (30706567725478).

Almost surely, 2^{121020002212111} is an apocalyptic number.

121020002212111 is a deficient number, since it is larger than the sum of its proper divisors (1806268689801).

121020002212111 is an equidigital number, since it uses as much as digits as its factorization.

121020002212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806268689800.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121020002212111 its reverse (111212200020121), we get a palindrome (232232202232232).

The spelling of 121020002212111 in words is "one hundred twenty-one trillion, twenty billion, two million, two hundred twelve thousand, one hundred eleven".