1212120121010 has 16 divisors (see below), whose sum is σ = 2202207025536. Its totient is φ = 480316757808.

The previous prime is 1212120121001. The next prime is 1212120121019. The reversal of 1212120121010 is 101210212121.

It is an interprime number because it is at equal distance from previous prime (1212120121001) and next prime (1212120121019).

It is not an unprimeable number, because it can be changed into a prime (1212120121019) 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, 566410202 + ... + 566412341.

It is an arithmetic number, because the mean of its divisors is an integer number (137637939096).

Almost surely, 2^{1212120121010} is an apocalyptic number.

1212120121010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212120121010 is a deficient number, since it is larger than the sum of its proper divisors (990086904526).

1212120121010 is a wasteful number, since it uses less digits than its factorization.

1212120121010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132822657.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1212120121010 its reverse (101210212121), we get a palindrome (1313330333131).

The spelling of 1212120121010 in words is "one trillion, two hundred twelve billion, one hundred twenty million, one hundred twenty-one thousand, ten".