1012121030 has 16 divisors (see below), whose sum is σ = 1860580800. Its totient is φ = 396234432.

The previous prime is 1012121029. The next prime is 1012121053. The reversal of 1012121030 is 301212101.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1076255 + ... + 1077194.

It is an arithmetic number, because the mean of its divisors is an integer number (116286300).

Almost surely, 2^1012121030 is an apocalyptic number.

1012121030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1012121030 is a deficient number, since it is larger than the sum of its proper divisors (848459770).

1012121030 is a wasteful number, since it uses less digits than its factorization.

1012121030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2153503.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1012121030 is about 31813.8496570283. The cubic root of 1012121030 is about 1004.0241280054.

Adding to 1012121030 its reverse (301212101), we get a palindrome (1313333131).

The spelling of 1012121030 in words is "one billion, twelve million, one hundred twenty-one thousand, thirty".