121007271 has 32 divisors (see below), whose sum is σ = 201719808. Its totient is φ = 62684640.

The previous prime is 121007267. The next prime is 121007273. The reversal of 121007271 is 172700121.

It is a happy number.

It is not a de Polignac number, because 121007271 - 2² = 121007267 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121007273) 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, 139786 + ... + 140648.

It is an arithmetic number, because the mean of its divisors is an integer number (6303744).

Almost surely, 2^121007271 is an apocalyptic number.

121007271 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121007271 is a deficient number, since it is larger than the sum of its proper divisors (80712537).

121007271 is a wasteful number, since it uses less digits than its factorization.

121007271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491.

The product of its (nonzero) digits is 196, while the sum is 21.

The square root of 121007271 is about 11000.3304950351. The cubic root of 121007271 is about 494.6186512895.

Adding to 121007271 its reverse (172700121), we get a palindrome (293707392).

It can be divided in two parts, 121007 and 271, that added together give a triangular number (121278 = T₄₉₂).

The spelling of 121007271 in words is "one hundred twenty-one million, seven thousand, two hundred seventy-one".