1022121111020 has 24 divisors (see below), whose sum is σ = 2156079698304. Its totient is φ = 407015041536.

The previous prime is 1022121111013. The next prime is 1022121111059. The reversal of 1022121111020 is 201111212201.

It is a junction number, because it is equal to n+sod(n) for n = 1022121110986 and 1022121111004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114583109 + ... + 114592028.

It is an arithmetic number, because the mean of its divisors is an integer number (89836654096).

Almost surely, 2^{1022121111020} is an apocalyptic number.

1022121111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022121111020 is an abundant number, since it is smaller than the sum of its proper divisors (1133958587284).

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

1022121111020 is a wasteful number, since it uses less digits than its factorization.

1022121111020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229175369 (or 229175367 counting only the distinct ones).

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

Adding to 1022121111020 its reverse (201111212201), we get a palindrome (1223232323221).

The spelling of 1022121111020 in words is "one trillion, twenty-two billion, one hundred twenty-one million, one hundred eleven thousand, twenty".