121211012211010 has 16 divisors (see below), whose sum is σ = 218216633259456. Its totient is φ = 48476224600048.

The previous prime is 121211012211001. The next prime is 121211012211019. The reversal of 121211012211010 is 10112210112121.

It is an interprime number because it is at equal distance from previous prime (121211012211001) and next prime (121211012211019).

It is not an unprimeable number, because it can be changed into a prime (121211012211019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1022473312 + ... + 1022591851.

It is an arithmetic number, because the mean of its divisors is an integer number (13638539578716).

Almost surely, 2^{121211012211010} is an apocalyptic number.

121211012211010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121211012211010 is a deficient number, since it is larger than the sum of its proper divisors (97005621048446).

121211012211010 is a wasteful number, since it uses less digits than its factorization.

121211012211010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2045071097.

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

Adding to 121211012211010 its reverse (10112210112121), we get a palindrome (131323222323131).

The spelling of 121211012211010 in words is "one hundred twenty-one trillion, two hundred eleven billion, twelve million, two hundred eleven thousand, ten".