742100122111 has 4 divisors (see below), whose sum is σ = 742281524424. Its totient is φ = 741918719800.

The previous prime is 742100122073. The next prime is 742100122117. The reversal of 742100122111 is 111221001247.

It is a happy number.

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 742100122111 - 2⁹ = 742100121599 is a prime.

It is a super-2 number, since 2×742100122111² (a number of 25 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 (742100122117) 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, 90695020 + ... + 90703201.

It is an arithmetic number, because the mean of its divisors is an integer number (185570381106).

Almost surely, 2^742100122111 is an apocalyptic number.

742100122111 is a deficient number, since it is larger than the sum of its proper divisors (181402313).

742100122111 is a wasteful number, since it uses less digits than its factorization.

742100122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181402312.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 742100122111 its reverse (111221001247), we get a palindrome (853321123358).

The spelling of 742100122111 in words is "seven hundred forty-two billion, one hundred million, one hundred twenty-two thousand, one hundred eleven".