1201822851 has 8 divisors (see below), whose sum is σ = 1605908304. Its totient is φ = 799476320.

The previous prime is 1201822771. The next prime is 1201822877. The reversal of 1201822851 is 1582281021.

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 1201822851 - 2¹³ = 1201814659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201822651) 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, 433116 + ... + 435881.

It is an arithmetic number, because the mean of its divisors is an integer number (200738538).

Almost surely, 2^1201822851 is an apocalyptic number.

1201822851 is a deficient number, since it is larger than the sum of its proper divisors (404085453).

1201822851 is an equidigital number, since it uses as much as digits as its factorization.

1201822851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869461.

The product of its (nonzero) digits is 2560, while the sum is 30.

The square root of 1201822851 is about 34667.3167551225. The cubic root of 1201822851 is about 1063.1963714695.

The spelling of 1201822851 in words is "one billion, two hundred one million, eight hundred twenty-two thousand, eight hundred fifty-one".