1202561101 has 4 divisors (see below), whose sum is σ = 1374355552. Its totient is φ = 1030766652.

The previous prime is 1202561093. The next prime is 1202561111. The reversal of 1202561101 is 1011652021.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1011652021 = 19603 ⋅51607.

It is a cyclic number.

It is not a de Polignac number, because 1202561101 - 2³ = 1202561093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202561111) 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, 85897215 + ... + 85897228.

It is an arithmetic number, because the mean of its divisors is an integer number (343588888).

Almost surely, 2^1202561101 is an apocalyptic number.

It is an amenable number.

1202561101 is a deficient number, since it is larger than the sum of its proper divisors (171794451).

1202561101 is an equidigital number, since it uses as much as digits as its factorization.

1202561101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171794450.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 1202561101 is about 34677.9627573478. The cubic root of 1202561101 is about 1063.4140253052.

The spelling of 1202561101 in words is "one billion, two hundred two million, five hundred sixty-one thousand, one hundred one".