1011212203 has 4 divisors (see below), whose sum is σ = 1011341160. Its totient is φ = 1011083248.

The previous prime is 1011212177. The next prime is 1011212231. The reversal of 1011212203 is 3022121101.

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 1011212203 - 2⁵ = 1011212171 is a prime.

It is a super-2 number, since 2×1011212203² = 2045100238992226418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011212263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51898 + ... + 68671.

It is an arithmetic number, because the mean of its divisors is an integer number (252835290).

Almost surely, 2^1011212203 is an apocalyptic number.

1011212203 is a deficient number, since it is larger than the sum of its proper divisors (128957).

1011212203 is an equidigital number, since it uses as much as digits as its factorization.

1011212203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128956.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1011212203 is about 31799.5629372481. The cubic root of 1011212203 is about 1003.7235191964.

Adding to 1011212203 its reverse (3022121101), we get a palindrome (4033333304).

The spelling of 1011212203 in words is "one billion, eleven million, two hundred twelve thousand, two hundred three".