1212420102 has 16 divisors (see below), whose sum is σ = 2483983152. Its totient is φ = 394282880.

The previous prime is 1212420101. The next prime is 1212420173. The reversal of 1212420102 is 2010242121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212420101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2464023 + ... + 2464514.

It is an arithmetic number, because the mean of its divisors is an integer number (155248947).

Almost surely, 2^1212420102 is an apocalyptic number.

1212420102 is an abundant number, since it is smaller than the sum of its proper divisors (1271563050).

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

1212420102 is a wasteful number, since it uses less digits than its factorization.

1212420102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4928583.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1212420102 is about 34819.8234056406. The cubic root of 1212420102 is about 1066.3121950850.

Adding to 1212420102 its reverse (2010242121), we get a palindrome (3222662223).

The spelling of 1212420102 in words is "one billion, two hundred twelve million, four hundred twenty thousand, one hundred two".