121011201210 has 64 divisors (see below), whose sum is σ = 305809557120. Its totient is φ = 30561546240.

The previous prime is 121011201209. The next prime is 121011201211. The reversal of 121011201210 is 12102110121.

It is an interprime number because it is at equal distance from previous prime (121011201209) and next prime (121011201211).

It is not an unprimeable number, because it can be changed into a prime (121011201211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1856370 + ... + 1920450.

It is an arithmetic number, because the mean of its divisors is an integer number (4778274330).

Almost surely, 2^121011201210 is an apocalyptic number.

121011201210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121011201210 is an abundant number, since it is smaller than the sum of its proper divisors (184798355910).

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

121011201210 is a wasteful number, since it uses less digits than its factorization.

121011201210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67423.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121011201210 its reverse (12102110121), we get a palindrome (133113311331).

The spelling of 121011201210 in words is "one hundred twenty-one billion, eleven million, two hundred one thousand, two hundred ten".