1022121201010 has 128 divisors (see below), whose sum is σ = 2399377365504. Its totient is φ = 304229191680.

The previous prime is 1022121201001. The next prime is 1022121201011. The reversal of 1022121201010 is 101021212201.

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

It is not an unprimeable number, because it can be changed into a prime (1022121201011) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21340149 + ... + 21387991.

It is an arithmetic number, because the mean of its divisors is an integer number (18745135668).

Almost surely, 2^{1022121201010} is an apocalyptic number.

1022121201010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1022121201010 is an abundant number, since it is smaller than the sum of its proper divisors (1377256164494).

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

1022121201010 is a wasteful number, since it uses less digits than its factorization.

1022121201010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49268.

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

Adding to 1022121201010 its reverse (101021212201), we get a palindrome (1123142413211).

The spelling of 1022121201010 in words is "one trillion, twenty-two billion, one hundred twenty-one million, two hundred one thousand, ten".