121420611 has 24 divisors (see below), whose sum is σ = 197092896. Its totient is φ = 71470080.

The previous prime is 121420603. The next prime is 121420661. The reversal of 121420611 is 116024121.

121420611 is a `hidden beast` number, since 12 + 1 + 42 + 0 + 611 = 666.

It is not a de Polignac number, because 121420611 - 2³ = 121420603 is a prime.

It is a super-2 number, since 2×121420611² = 29485929551226642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121420661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19870 + ... + 25251.

It is an arithmetic number, because the mean of its divisors is an integer number (8212204).

Almost surely, 2^121420611 is an apocalyptic number.

121420611 is a deficient number, since it is larger than the sum of its proper divisors (75672285).

121420611 is a wasteful number, since it uses less digits than its factorization.

121420611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45163 (or 45160 counting only the distinct ones).

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

The square root of 121420611 is about 11019.1020959060. The cubic root of 121420611 is about 495.1811886440.

Adding to 121420611 its reverse (116024121), we get a palindrome (237444732).

The spelling of 121420611 in words is "one hundred twenty-one million, four hundred twenty thousand, six hundred eleven".