1022021101220 has 48 divisors (see below), whose sum is σ = 2531974867968. Its totient is φ = 339103774080.

The previous prime is 1022021101217. The next prime is 1022021101259. The reversal of 1022021101220 is 221011202201.

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 = 1022021101195 and 1022021101204.

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, 117740027 + ... + 117748706.

It is an arithmetic number, because the mean of its divisors is an integer number (52749476416).

Almost surely, 2^{1022021101220} is an apocalyptic number.

1022021101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022021101220 is an abundant number, since it is smaller than the sum of its proper divisors (1509953766748).

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

1022021101220 is a wasteful number, since it uses less digits than its factorization.

1022021101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235488780 (or 235488778 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1022021101220 its reverse (221011202201), we get a palindrome (1243032303421).

The spelling of 1022021101220 in words is "one trillion, twenty-two billion, twenty-one million, one hundred one thousand, two hundred twenty".