1210020030 has 48 divisors (see below), whose sum is σ = 3159162864. Its totient is φ = 321327360.

The previous prime is 1210020013. The next prime is 1210020061. The reversal of 1210020030 is 300200121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1210019994 and 1210020021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6204 + ... + 49583.

It is an arithmetic number, because the mean of its divisors is an integer number (65815893).

Almost surely, 2^1210020030 is an apocalyptic number.

1210020030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1210020030 is an abundant number, since it is smaller than the sum of its proper divisors (1949142834).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1210020030 is a wasteful number, since it uses less digits than its factorization.

1210020030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56041 (or 56038 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 1210020030 is about 34785.3421716677. The cubic root of 1210020030 is about 1065.6081166275.

Adding to 1210020030 its reverse (300200121), we get a palindrome (1510220151).

The spelling of 1210020030 in words is "one billion, two hundred ten million, twenty thousand, thirty".