121020001010 has 8 divisors (see below), whose sum is σ = 217836001836. Its totient is φ = 48408000400.

The previous prime is 121020000973. The next prime is 121020001019. The reversal of 121020001010 is 10100020121.

It can be written as a sum of positive squares in 2 ways, for example, as 109883631169 + 11136369841 = 331487^2 + 105529^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121020001019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6051000041 + ... + 6051000060.

Almost surely, 2^121020001010 is an apocalyptic number.

121020001010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121020001010 is a deficient number, since it is larger than the sum of its proper divisors (96816000826).

121020001010 is a wasteful number, since it uses less digits than its factorization.

121020001010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12102000108.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 121020001010 its reverse (10100020121), we get a palindrome (131120021131).

The spelling of 121020001010 in words is "one hundred twenty-one billion, twenty million, one thousand, ten".