1211010221022 has 16 divisors (see below), whose sum is σ = 2768023362432. Its totient is φ = 346002920280.

The previous prime is 1211010221011. The next prime is 1211010221023. The reversal of 1211010221022 is 2201220101121.

It is a junction number, because it is equal to n+sod(n) for n = 1211010220992 and 1211010221010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211010221023) 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, 14416788304 + ... + 14416788387.

It is an arithmetic number, because the mean of its divisors is an integer number (173001460152).

Almost surely, 2^{1211010221022} is an apocalyptic number.

1211010221022 is an abundant number, since it is smaller than the sum of its proper divisors (1557013141410).

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

1211010221022 is a wasteful number, since it uses less digits than its factorization.

1211010221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28833576703.

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

Adding to 1211010221022 its reverse (2201220101121), we get a palindrome (3412230322143).

The spelling of 1211010221022 in words is "one trillion, two hundred eleven billion, ten million, two hundred twenty-one thousand, twenty-two".