121151011 has 4 divisors (see below), whose sum is σ = 127527400. Its totient is φ = 114774624.

The previous prime is 121150979. The next prime is 121151021. The reversal of 121151011 is 110151121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110151121 = 487 ⋅226183.

It is a cyclic number.

It is not a de Polignac number, because 121151011 - 2⁵ = 121150979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121150982 and 121151000.

It is not an unprimeable number, because it can be changed into a prime (121151021) 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, 3188166 + ... + 3188203.

It is an arithmetic number, because the mean of its divisors is an integer number (31881850).

Almost surely, 2^121151011 is an apocalyptic number.

121151011 is a deficient number, since it is larger than the sum of its proper divisors (6376389).

121151011 is an equidigital number, since it uses as much as digits as its factorization.

121151011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6376388.

The product of its (nonzero) digits is 10, while the sum is 13.

The square root of 121151011 is about 11006.8619960459. The cubic root of 121151011 is about 494.8144201111.

The spelling of 121151011 in words is "one hundred twenty-one million, one hundred fifty-one thousand, eleven".