1020220121011 has 16 divisors (see below), whose sum is σ = 1257314344384. Its totient is φ = 806140750464.

The previous prime is 1020220120999. The next prime is 1020220121033. The reversal of 1020220121011 is 1101210220201.

It is not a de Polignac number, because 1020220121011 - 2¹³ = 1020220112819 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 1020220120982 and 1020220121000.

It is not an unprimeable number, because it can be changed into a prime (1020220121051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7336140 + ... + 7473913.

It is an arithmetic number, because the mean of its divisors is an integer number (78582146524).

Almost surely, 2^{1020220121011} is an apocalyptic number.

1020220121011 is a deficient number, since it is larger than the sum of its proper divisors (237094223373).

1020220121011 is a wasteful number, since it uses less digits than its factorization.

1020220121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14810830.

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

Adding to 1020220121011 its reverse (1101210220201), we get a palindrome (2121430341212).

The spelling of 1020220121011 in words is "one trillion, twenty billion, two hundred twenty million, one hundred twenty-one thousand, eleven".