1061777121 has 4 divisors (see below), whose sum is σ = 1415702832. Its totient is φ = 707851412.

The previous prime is 1061777117. The next prime is 1061777131. The reversal of 1061777121 is 1217771601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1061777121 - 2² = 1061777117 is a prime.

It is a super-2 number, since 2×1061777121² = 2254741309358097282, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1061777111) 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, 176962851 + ... + 176962856.

It is an arithmetic number, because the mean of its divisors is an integer number (353925708).

Almost surely, 2^1061777121 is an apocalyptic number.

It is an amenable number.

1061777121 is a deficient number, since it is larger than the sum of its proper divisors (353925711).

1061777121 is an equidigital number, since it uses as much as digits as its factorization.

1061777121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353925710.

The product of its (nonzero) digits is 4116, while the sum is 33.

The square root of 1061777121 is about 32584.9216816613. The cubic root of 1061777121 is about 1020.1823078596.

The spelling of 1061777121 in words is "one billion, sixty-one million, seven hundred seventy-seven thousand, one hundred twenty-one".