2111022120021 has 8 divisors (see below), whose sum is σ = 2816581428000. Its totient is φ = 1406405446032.

The previous prime is 2111022119951. The next prime is 2111022120029. The reversal of 2111022120021 is 1200212201112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2111022120021 - 2¹³ = 2111022111829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111022120029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235653271 + ... + 235662228.

It is an arithmetic number, because the mean of its divisors is an integer number (352072678500).

Almost surely, 2^{2111022120021} is an apocalyptic number.

It is an amenable number.

2111022120021 is a deficient number, since it is larger than the sum of its proper divisors (705559307979).

2111022120021 is a wasteful number, since it uses less digits than its factorization.

2111022120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471316995.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2111022120021 its reverse (1200212201112), we get a palindrome (3311234321133).

The spelling of 2111022120021 in words is "two trillion, one hundred eleven billion, twenty-two million, one hundred twenty thousand, twenty-one".