1011210101220 has 96 divisors (see below), whose sum is σ = 3089549030400. Its totient is φ = 245081381760.

The previous prime is 1011210101219. The next prime is 1011210101233. The reversal of 1011210101220 is 221010121101.

1011210101220 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 1011210101196 and 1011210101205.

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, 2518449 + ... + 2892231.

It is an arithmetic number, because the mean of its divisors is an integer number (32182802400).

Almost surely, 2^{1011210101220} is an apocalyptic number.

1011210101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011210101220 is an abundant number, since it is smaller than the sum of its proper divisors (2078338929180).

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

1011210101220 is a wasteful number, since it uses less digits than its factorization.

1011210101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377905 (or 377903 counting only the distinct ones).

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

Adding to 1011210101220 its reverse (221010121101), we get a palindrome (1232220222321).

The spelling of 1011210101220 in words is "one trillion, eleven billion, two hundred ten million, one hundred one thousand, two hundred twenty".