1212122030 has 16 divisors (see below), whose sum is σ = 2493508320. Its totient is φ = 415584672.

The previous prime is 1212121997. The next prime is 1212122039. The reversal of 1212122030 is 302212121.

It is a happy number.

It is a super-2 number, since 2×1212122030² = 2938479631222641800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1212121996 and 1212122014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212122039) 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, 8657945 + ... + 8658084.

It is an arithmetic number, because the mean of its divisors is an integer number (155844270).

Almost surely, 2^1212122030 is an apocalyptic number.

1212122030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212122030 is an abundant number, since it is smaller than the sum of its proper divisors (1281386290).

1212122030 is a wasteful number, since it uses less digits than its factorization.

1212122030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17316043.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1212122030 is about 34815.5429370274. The cubic root of 1212122030 is about 1066.2248040731.

Adding to 1212122030 its reverse (302212121), we get a palindrome (1514334151).

Subtracting from 1212122030 its reverse (302212121), we obtain a palindrome (909909909).

The spelling of 1212122030 in words is "one billion, two hundred twelve million, one hundred twenty-two thousand, thirty".