1201201019 has 4 divisors (see below), whose sum is σ = 1203937680. Its totient is φ = 1198464360.

The previous prime is 1201201009. The next prime is 1201201021. The reversal of 1201201019 is 9101021021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1201201019 - 2⁴ = 1201201003 is a prime.

It is a super-2 number, since 2×1201201019² = 2885767776093276722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201200988 and 1201201006.

It is not an unprimeable number, because it can be changed into a prime (1201201009) 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, 1367672 + ... + 1368549.

It is an arithmetic number, because the mean of its divisors is an integer number (300984420).

Almost surely, 2^1201201019 is an apocalyptic number.

1201201019 is a deficient number, since it is larger than the sum of its proper divisors (2736661).

1201201019 is an equidigital number, since it uses as much as digits as its factorization.

1201201019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2736660.

The product of its (nonzero) digits is 36, while the sum is 17.

The square root of 1201201019 is about 34658.3470321364. The cubic root of 1201201019 is about 1063.0129712890.

The spelling of 1201201019 in words is "one billion, two hundred one million, two hundred one thousand, nineteen".