1010661121 has 8 divisors (see below), whose sum is σ = 1040364864. Its totient is φ = 981239280.

The previous prime is 1010661109. The next prime is 1010661131. The reversal of 1010661121 is 1211660101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1010661121 - 2⁵ = 1010661089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1010661131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63190 + ... + 77551.

It is an arithmetic number, because the mean of its divisors is an integer number (130045608).

Almost surely, 2^1010661121 is an apocalyptic number.

It is an amenable number.

1010661121 is a deficient number, since it is larger than the sum of its proper divisors (29703743).

1010661121 is a wasteful number, since it uses less digits than its factorization.

1010661121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140951.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 1010661121 is about 31790.8968259783. The cubic root of 1010661121 is about 1003.5411524377.

The spelling of 1010661121 in words is "one billion, ten million, six hundred sixty-one thousand, one hundred twenty-one".