1211020299 has 6 divisors (see below), whose sum is σ = 1749251556. Its totient is φ = 807346860.

The previous prime is 1211020289. The next prime is 1211020303. The reversal of 1211020299 is 9920201121.

It is not a de Polignac number, because 1211020299 - 2¹³ = 1211012107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1211020229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67278897 + ... + 67278914.

It is an arithmetic number, because the mean of its divisors is an integer number (291541926).

Almost surely, 2^1211020299 is an apocalyptic number.

1211020299 is a deficient number, since it is larger than the sum of its proper divisors (538231257).

1211020299 is a wasteful number, since it uses less digits than its factorization.

1211020299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134557817 (or 134557814 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 1211020299 is about 34799.7169385040. The cubic root of 1211020299 is about 1065.9016658153.

The spelling of 1211020299 in words is "one billion, two hundred eleven million, twenty thousand, two hundred ninety-nine".