1021120203 has 8 divisors (see below), whose sum is σ = 1362352528. Its totient is φ = 680317344.

The previous prime is 1021120187. The next prime is 1021120223. The reversal of 1021120203 is 3020211201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1021120203 - 2⁴ = 1021120187 is a prime.

It is a super-2 number, since 2×1021120203² = 2085372937949522418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021120223) 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, 101776 + ... + 111357.

It is an arithmetic number, because the mean of its divisors is an integer number (170294066).

Almost surely, 2^1021120203 is an apocalyptic number.

1021120203 is a deficient number, since it is larger than the sum of its proper divisors (341232325).

1021120203 is a wasteful number, since it uses less digits than its factorization.

1021120203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214733.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1021120203 is about 31954.9714911467. The cubic root of 1021120203 is about 1006.9910785901.

Adding to 1021120203 its reverse (3020211201), we get a palindrome (4041331404).

The spelling of 1021120203 in words is "one billion, twenty-one million, one hundred twenty thousand, two hundred three".