1101010120221 has 128 divisors (see below), whose sum is σ = 1742901608448. Its totient is φ = 611306784000.

The previous prime is 1101010120201. The next prime is 1101010120279. The reversal of 1101010120221 is 1220210101011.

It is not a de Polignac number, because 1101010120221 - 2⁹ = 1101010119709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1101010120197 and 1101010120206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101010120201) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1120050496 + ... + 1120051478.

It is an arithmetic number, because the mean of its divisors is an integer number (13616418816).

Almost surely, 2^{1101010120221} is an apocalyptic number.

1101010120221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1101010120221 is a deficient number, since it is larger than the sum of its proper divisors (641891488227).

1101010120221 is a wasteful number, since it uses less digits than its factorization.

1101010120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1495.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1101010120221 its reverse (1220210101011), we get a palindrome (2321220221232).

The spelling of 1101010120221 in words is "one trillion, one hundred one billion, ten million, one hundred twenty thousand, two hundred twenty-one".