1212210220210 has 64 divisors (see below), whose sum is σ = 2403412300800. Its totient is φ = 436551598080.

The previous prime is 1212210220189. The next prime is 1212210220223. The reversal of 1212210220210 is 120220122121.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4606266 + ... + 4862314.

It is an arithmetic number, because the mean of its divisors is an integer number (37553317200).

Almost surely, 2^{1212210220210} is an apocalyptic number.

1212210220210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212210220210 is a deficient number, since it is larger than the sum of its proper divisors (1191202080590).

1212210220210 is a wasteful number, since it uses less digits than its factorization.

1212210220210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256483.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1212210220210 its reverse (120220122121), we get a palindrome (1332430342331).

The spelling of 1212210220210 in words is "one trillion, two hundred twelve billion, two hundred ten million, two hundred twenty thousand, two hundred ten".