121010201010 has 48 divisors (see below), whose sum is σ = 314791438104. Its totient is φ = 32252472576.

The previous prime is 121010200951. The next prime is 121010201017. The reversal of 121010201010 is 10102010121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 117393261129 + 3616939881 = 342627^2 + 60141^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 121010200983 and 121010201001.

It is not an unprimeable number, because it can be changed into a prime (121010201017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 179257 + ... + 523596.

Almost surely, 2^121010201010 is an apocalyptic number.

121010201010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121010201010 is an abundant number, since it is smaller than the sum of its proper divisors (193781237094).

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

121010201010 is a wasteful number, since it uses less digits than its factorization.

121010201010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704779 (or 704776 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 121010201010 its reverse (10102010121), we get a palindrome (131112211131).

The spelling of 121010201010 in words is "one hundred twenty-one billion, ten million, two hundred one thousand, ten".