1011021210220 has 48 divisors (see below), whose sum is σ = 2428800187968. Its totient is φ = 346300231680.

The previous prime is 1011021210197. The next prime is 1011021210233. The reversal of 1011021210220 is 220121201101.

It is a self number, because there is not a number n which added to its sum of digits gives 1011021210220.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3350821 + ... + 3640060.

It is an arithmetic number, because the mean of its divisors is an integer number (50600003916).

Almost surely, 2^{1011021210220} is an apocalyptic number.

1011021210220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011021210220 is an abundant number, since it is smaller than the sum of its proper divisors (1417778977748).

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

1011021210220 is a wasteful number, since it uses less digits than its factorization.

1011021210220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6991930 (or 6991928 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1011021210220 its reverse (220121201101), we get a palindrome (1231142411321).

The spelling of 1011021210220 in words is "one trillion, eleven billion, twenty-one million, two hundred ten thousand, two hundred twenty".