210001121011220 has 96 divisors (see below), whose sum is σ = 550596607868160. Its totient is φ = 65362574499840.

The previous prime is 210001121011217. The next prime is 210001121011403. The reversal of 210001121011220 is 22110121100012.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 210001121011195 and 210001121011204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95074829 + ... + 97258548.

It is an arithmetic number, because the mean of its divisors is an integer number (5735381331960).

Almost surely, 2^{210001121011220} is an apocalyptic number.

210001121011220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210001121011220 is an abundant number, since it is smaller than the sum of its proper divisors (340595486856940).

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

210001121011220 is a wasteful number, since it uses less digits than its factorization.

210001121011220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192334113 (or 192334111 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 210001121011220 its reverse (22110121100012), we get a palindrome (232111242111232).

The spelling of 210001121011220 in words is "two hundred ten trillion, one billion, one hundred twenty-one million, eleven thousand, two hundred twenty".