122121100202111 has 16 divisors (see below), whose sum is σ = 123649579470528. Its totient is φ = 120602194944000.

The previous prime is 122121100202099. The next prime is 122121100202137. The reversal of 122121100202111 is 111202001121221.

It is a cyclic number.

It is not a de Polignac number, because 122121100202111 - 2¹⁴ = 122121100185727 is a prime.

It is a super-2 number, since 2×122121100202111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122121100202111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122121100202161) 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, 367671965 + ... + 368003961.

It is an arithmetic number, because the mean of its divisors is an integer number (7728098716908).

Almost surely, 2^{122121100202111} is an apocalyptic number.

122121100202111 is a deficient number, since it is larger than the sum of its proper divisors (1528479268417).

122121100202111 is a wasteful number, since it uses less digits than its factorization.

122121100202111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346402.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 122121100202111 its reverse (111202001121221), we get a palindrome (233323101323332).

The spelling of 122121100202111 in words is "one hundred twenty-two trillion, one hundred twenty-one billion, one hundred million, two hundred two thousand, one hundred eleven".