121211201210 has 16 divisors (see below), whose sum is σ = 238014722592. Its totient is φ = 44076800400.

The previous prime is 121211201173. The next prime is 121211201227. The reversal of 121211201210 is 12102112121.

121211201210 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×121211201210² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 550959896 + ... + 550960115.

It is an arithmetic number, because the mean of its divisors is an integer number (14875920162).

Almost surely, 2^121211201210 is an apocalyptic number.

121211201210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121211201210 is a deficient number, since it is larger than the sum of its proper divisors (116803521382).

121211201210 is a wasteful number, since it uses less digits than its factorization.

121211201210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101920029.

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

Adding to 121211201210 its reverse (12102112121), we get a palindrome (133313313331).

The spelling of 121211201210 in words is "one hundred twenty-one billion, two hundred eleven million, two hundred one thousand, two hundred ten".