121001011210 has 16 divisors (see below), whose sum is σ = 218200005216. Its totient is φ = 48311918928.

The previous prime is 121001011193. The next prime is 121001011249. The reversal of 121001011210 is 12110100121.

It is a Harshad number since it is a multiple of its sum of digits (10).

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, 11054952 + ... + 11065891.

It is an arithmetic number, because the mean of its divisors is an integer number (13637500326).

Almost surely, 2^121001011210 is an apocalyptic number.

121001011210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121001011210 is a deficient number, since it is larger than the sum of its proper divisors (97198994006).

121001011210 is a wasteful number, since it uses less digits than its factorization.

121001011210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22121397.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 121001011210 its reverse (12110100121), we get a palindrome (133111111331).

The spelling of 121001011210 in words is "one hundred twenty-one billion, one million, eleven thousand, two hundred ten".