1020210221100 has 72 divisors (see below), whose sum is σ = 3373495138048. Its totient is φ = 233190907200.

The previous prime is 1020210221083. The next prime is 1020210221101. The reversal of 1020210221100 is 11220120201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (1020210221101) 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, 242905096 + ... + 242909295.

Almost surely, 2^{1020210221100} is an apocalyptic number.

1020210221100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020210221100 is an abundant number, since it is smaller than the sum of its proper divisors (2353284916948).

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

1020210221100 is a wasteful number, since it uses less digits than its factorization.

1020210221100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485814415 (or 485814408 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1020210221100 its reverse (11220120201), we get a palindrome (1031430341301).

The spelling of 1020210221100 in words is "one trillion, twenty billion, two hundred ten million, two hundred twenty-one thousand, one hundred".