10121201202220 has 24 divisors (see below), whose sum is σ = 21254590201824. Its totient is φ = 4048467590016.

The previous prime is 10121201202139. The next prime is 10121201202263. The reversal of 10121201202220 is 2220210212101.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 10121201202194 and 10121201202203.

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, 7956984 + ... + 9140896.

It is an arithmetic number, because the mean of its divisors is an integer number (885607925076).

Almost surely, 2^{10121201202220} is an apocalyptic number.

10121201202220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10121201202220 is an abundant number, since it is smaller than the sum of its proper divisors (11133388999604).

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

10121201202220 is a wasteful number, since it uses less digits than its factorization.

10121201202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1611369 (or 1611367 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 10121201202220 its reverse (2220210212101), we get a palindrome (12341411414321).

The spelling of 10121201202220 in words is "ten trillion, one hundred twenty-one billion, two hundred one million, two hundred two thousand, two hundred twenty".