1021211220022 has 32 divisors (see below), whose sum is σ = 1765484916480. Its totient is φ = 433968101280.

The previous prime is 1021211220013. The next prime is 1021211220023. The reversal of 1021211220022 is 2200221121201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1021211219978 and 1021211220005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021211220023) 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, 152053 + ... + 1437199.

It is an arithmetic number, because the mean of its divisors is an integer number (55171403640).

Almost surely, 2^{1021211220022} is an apocalyptic number.

1021211220022 is a deficient number, since it is larger than the sum of its proper divisors (744273696458).

1021211220022 is a wasteful number, since it uses less digits than its factorization.

1021211220022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285636.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1021211220022 its reverse (2200221121201), we get a palindrome (3221432341223).

The spelling of 1021211220022 in words is "one trillion, twenty-one billion, two hundred eleven million, two hundred twenty thousand, twenty-two".