201101121342 has 48 divisors (see below), whose sum is σ = 503290515312. Its totient is φ = 57355042560.

The previous prime is 201101121337. The next prime is 201101121343. The reversal of 201101121342 is 243121101102.

201101121342 is a `hidden beast` number, since 201 + 1 + 0 + 1 + 121 + 342 = 666.

It is a super-2 number, since 2×201101121342² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201101121343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29869053 + ... + 29875784.

It is an arithmetic number, because the mean of its divisors is an integer number (10485219069).

Almost surely, 2^201101121342 is an apocalyptic number.

201101121342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

201101121342 is an abundant number, since it is smaller than the sum of its proper divisors (302189393970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201101121342 is a wasteful number, since it uses less digits than its factorization.

201101121342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59744873 (or 59744870 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 201101121342 its reverse (243121101102), we get a palindrome (444222222444).

The spelling of 201101121342 in words is "two hundred one billion, one hundred one million, one hundred twenty-one thousand, three hundred forty-two".