135121701 has 32 divisors (see below), whose sum is σ = 218977920. Its totient is φ = 72979200.

The previous prime is 135121699. The next prime is 135121703. The reversal of 135121701 is 107121531.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (135121699) and next prime (135121703).

It is not a de Polignac number, because 135121701 - 2¹ = 135121699 is a prime.

It is a super-2 number, since 2×135121701² = 36515748162266802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135121703) 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, 7011 + ... + 17871.

It is an arithmetic number, because the mean of its divisors is an integer number (6843060).

Almost surely, 2^135121701 is an apocalyptic number.

135121701 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

135121701 is a deficient number, since it is larger than the sum of its proper divisors (83856219).

135121701 is a wasteful number, since it uses less digits than its factorization.

135121701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10917.

The product of its (nonzero) digits is 210, while the sum is 21.

The square root of 135121701 is about 11624.1860360199. The cubic root of 135121701 is about 513.1468901356.

The spelling of 135121701 in words is "one hundred thirty-five million, one hundred twenty-one thousand, seven hundred one".