121021220002111 has 32 divisors (see below), whose sum is σ = 146641519051776. Its totient is φ = 98411382480000.

The previous prime is 121021220002103. The next prime is 121021220002127. The reversal of 121021220002111 is 111200022120121.

It is a cyclic number.

It is not a de Polignac number, because 121021220002111 - 2³ = 121021220002103 is a prime.

It is a super-2 number, since 2×121021220002111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121021220002171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88461925 + ... + 89819566.

It is an arithmetic number, because the mean of its divisors is an integer number (4582547470368).

Almost surely, 2^{121021220002111} is an apocalyptic number.

121021220002111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121021220002111 is a deficient number, since it is larger than the sum of its proper divisors (25620299049665).

121021220002111 is a wasteful number, since it uses less digits than its factorization.

121021220002111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178281663.

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

Adding to 121021220002111 its reverse (111200022120121), we get a palindrome (232221242122232).

The spelling of 121021220002111 in words is "one hundred twenty-one trillion, twenty-one billion, two hundred twenty million, two thousand, one hundred eleven".