1012221123 has 16 divisors (see below), whose sum is σ = 1430161920. Its totient is φ = 634610816.

The previous prime is 1012221121. The next prime is 1012221127. The reversal of 1012221123 is 3211222101.

It is not a de Polignac number, because 1012221123 - 2¹ = 1012221121 is a prime.

It is a super-2 number, since 2×1012221123² = 2049183203694762258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1012221121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62458 + ... + 76976.

It is an arithmetic number, because the mean of its divisors is an integer number (89385120).

Almost surely, 2^1012221123 is an apocalyptic number.

1012221123 is a deficient number, since it is larger than the sum of its proper divisors (417940797).

1012221123 is a wasteful number, since it uses less digits than its factorization.

1012221123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15906.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1012221123 is about 31815.4227223213. The cubic root of 1012221123 is about 1004.0572243353.

Adding to 1012221123 its reverse (3211222101), we get a palindrome (4223443224).

The spelling of 1012221123 in words is "one billion, twelve million, two hundred twenty-one thousand, one hundred twenty-three".